Understanding the effects of radiation on reconfigurable phase change materials

David Adams was elected Fellow and President of American Vacuum Society: Science and Technology of Materials, Interfaces and Processing in 2023.
David Adams was elected Fellow and President of American Vacuum Society: Science and Technology of Materials, Interfaces and Processing in 2023.

Chalcogenide thin films that undergo reversible phase changes show promise for next-generation nanophotonics, metasurfaces, and other emerging technologies. This general class of thin films can be switched rapidly between amorphous and crystalline phases which exhibit contrasted optical and electronic states. Despite the successful development of benchmark Ge2 Sb2 Te5 for some applications, there is a desire to identify new materials with improved performance. The Sandia LDRD team focused on the behavior of sputter-deposited (Ge2 Sb2Te5)xC1-x [0 < 1-x < 0.12] films and investigated the phase stability and key unknowns of several promising quaternary compositions.  

This study confirmed increased crystallization temperatures of C-doped Ge2 Sb2 Te5 consistent with enhanced amorphous phase stability. Additional experiments involving high energy, and heavy ion irradiation explored the stability of films subjected to collision-induced disordering. Detailed characterization showed that crystalline films can be amorphized by ion irradiation (metamictization) and quaternary addition affects radiation tolerance. This study provides new insight into chalcogenide phase stability offering design pathways for future applications. The project involved collaborations with students and faculty from Sandia Alliance partner Purdue University and National/Regional partner University of Florida. This work generated multiple publications including one extensive article in the Journal of Applied Physics. PI David Adams was also recently elected Fellow and President of American Vacuum Society: Science and Technology of Materials, Interfaces and Processing. 

Graphic showing plan view transmission electron micrographs and electron diffraction patterns comparing a non-doped film with three films of varied, doped composition.
Plan view transmission electron micrographs and electron diffraction patterns comparing a non-doped film with three films of varied, doped composition. Films are shown after deposition, heating to crystallize, and MeV Au ion irradiation to high dose. Lack of distinct spots in the diffraction patterns post-irradiation is evidence of amorphization.

Sandia researchers linked to work 

  • David Adams 
  • Robin Jacobs-Gedrim 
  • Thomas Beechem III 
  • Catherine Sobczak 
  • Khalid Hattar 

Sponsored by 

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Associated Publications

  • Schoell, R., Barr, C.M., Medlin, D.L., Adams, D.P., Abdeljawad, F., Hattar, K., & Hattar, K. (2024). The radiation instability of thermally stable nanocrystalline platinum gold. Journal of Materials Science, 59(25), pp. 11497-11509. https://doi.org/10.1007/s10853-024-09837-5 Publication ID: 124904
  • Britton, D., Hinojos, A., Hummel, M., Adams, D.P., Medlin, D.L., & Medlin, D.L. (2024). Application of the polyhedral template matching method for characterization of 2D atomic resolution electron microscopy images. Materials Characterization, 213. https://doi.org/10.1016/j.matchar.2024.114017 Publication ID: 124676
  • Venuti, M.B., Zhang, X.S., Lang, E.J., Addamane, S.J., Paik, H., Allen, P.J., Sharma, P.A., Muller, D., Hattar, K., Lu, T., Eley, S.M., & Eley, S.M. (2024). Inducing a tunable skyrmion-antiskyrmion system through ion beam modification of FeGe films. npj Spintronics (Online), 2(1). https://doi.org/10.1038/s44306-024-00013-8 Publication ID: 124764
  • Abere, M.J., Gallegos, R.J., Moorman, M.W., Rodriguez, M.A., Kotula, P.G., Kellogg, R.A., Adams, D.P., & Adams, D.P. (2024). Normally closed thermally activated irreversible solid state erbium hydrides switches. Micro and Nano Engineering, 23(1). https://doi.org/10.1016/j.mne.2024.100243 Publication ID: 124284
  • Adams, D.P., McClure, Z.D., Appleton, R.J., Strachan, A., & Strachan, A. (2024). Effects of carbon concentration on the local atomic structure of amorphous GST. Journal of Chemical Physics, 160(17). https://doi.org/10.1063/5.0203532 Publication ID: 124640
  • Abere, M.J., Reeves, R.V., Sobczak, C., Choi, H., Adams, D.P., & Adams, D.P. (2023). Effects of diffusion barriers on reaction wave stability in Co/Al reactive multilayers. Journal of Applied Physics, 134(19). https://doi.org/10.1063/5.0171539 Publication ID: 122936
  • Adams, D.P., Langhout, J., Alverson, D., Olds, D., Ravel, B., Butala, M., & Butala, M. (2023). Atomic Structure Transformations of C-Doped Ge2Sb2Te5 Thin Films Using In Situ X-Ray Scattering [Poster]. https://doi.org/10.2172/2430519 Publication ID: 125756
  • Silling, S.A., Adams, D.P., Branch, B.A., Specht, P.E., & Specht, P.E. (2023). Mesoscale model for spall in additively manufactured metals [Conference Presenation]. https://doi.org/10.2172/2430936 Publication ID: 127228
  • Abere, M.J., Kittell, D.E., Sobczak, C., Adams, D.P., & Adams, D.P. (2023). Stability Criteria for Self-Propagating Reaction Waves in Co/Al Multilayers. ACS Applied Materials and Interfaces, 15(17), pp. 21210-21218. https://doi.org/10.1021/acsami.3c00180 Publication ID: 123256
  • Kalaswad, M., Jarzembski, A., Piontkowski, Z.T., McDonald, A., Sobczak, C., Jacobs-Gedrim, R.B., Rodriguez, M.A., Kotula, P.G., Beechem, T., Adams, D.P., & Adams, D.P. (2023). Structural, electrical, and thermal properties of Ge-rich Ge2Sb2Te5 alloys [Conference Presenation]. https://doi.org/10.2172/2431093 Publication ID: 127792
  • Shrivastava, A., Kalaswad, M., Custer, J.O., Adams, D.P., Najm, H.N., & Najm, H.N. (2023). Bayesian optimization-assisted sputter deposition of Molybdenum thin films [Conference Presenation]. https://doi.org/10.2172/2431116 Publication ID: 127872
  • Kalaswad, M., Custer, J.O., Addamane, S.J., Khan, R.M., Jauregui, L., Babuska, T.F., Henriksen, A., Delrio, F.W., Dingreville, R.P.M., Adams, D.P., & Adams, D.P. (2023). Sputter-Deposited Mo Thin Films: Multimodal Characterization of Structure, Surface Morphology, Density, Residual Stress, Electrical Resistivity, and Mechanical Response. Integrating Materials and Manufacturing Innovation, 12(2), pp. 118-129. https://doi.org/10.1007/s40192-023-00297-4 Publication ID: 123636
  • Lang, E., Clark, T., Schoell, R., Hattar, K., Adams, D.P., & Adams, D.P. (2023). In situ investigation of ion irradiation-induced amorphization of (Ge2Sb2Te5)1−xCx [0 ≤ x ≤ 0.12]. Journal of Applied Physics, 133(13). https://doi.org/10.1063/5.0136748 Publication ID: 123500
  • Barrios, A., Nathaniel, J.E., Monti, J.M., Milne, Z., Adams, D.P., Hattar, K., Medlin, D.L., Dingreville, R.P.M., Boyce, B.L., & Boyce, B.L. (2023). Gradient nanostructuring via compositional means. Acta Materialia, 247. https://doi.org/10.1016/j.actamat.2023.118733 Publication ID: 123640
  • Yadav, D., Sheu, E., Demkowicz, M., Xie, K., Derby, B., Baldwin, J., Li, N., Schoell, R., Lang, E.J., Hattar, K., & Hattar, K. (2023). Discovering the mechanisms of helium channel evolution via in-situ annealing and observation in TEM [Conference Presenation]. https://doi.org/10.2172/2431650 Publication ID: 129664
  • Schoell, R., Barr, C.M., Medlin, D.L., Adams, D.P., Mahmood, Y., Dingreville, R.P.M., Abdeljawad, F., Boyce, B.L., Hattar, K., & Hattar, K. (2023). Radiation Instability of Thermally Stable Nanocrystalline Pt-Au System [Conference Presenation]. https://doi.org/10.2172/2431773 Publication ID: 130096
  • Boyce, B.L., Barr, C.M., Duong, T., Bufford, D.C., Molkeri, A., Heckman, N.M., Adams, D.P., Hattar, K., Demkowicz, M.J., & Demkowicz, M.J. (2023). Implications of Fatigue-Crack Healing in Nanocrystalline Metals [Slides] [Conference Presenation]. https://doi.org/10.2172/2002234 Publication ID: 109900
  • Hattar, K., Jungjohann, K., & Jungjohann, K. (2023). Recent Developments in Coupled In-situ TEM to Better Understand Materials Degradation [Slides] [Conference Presenation]. https://doi.org/10.2172/2001918 Publication ID: 108684
  • Lang, E.J., Heckman, N.M., Clark, T., Derby, B.K., Barrios, A., Monterrosa, A., Barr, C.M., Buller, D.L., Stauffer, D.D., Li, N., Boyce, B.L., Briggs, S.A., Hattar, K., & Hattar, K. (2023). Development of an in situ ion irradiation scanning electron microscope. Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 537(N/A), pp. 29-37. https://doi.org/10.1016/j.nimb.2023.01.016 Publication ID: 123788
  • Schoell, R., Reyes, A., Suman, G., Hamil, J., Rosenberg, S.G., la Treadwell, R., Hattar, K., Lang, E., & Lang, E. (2023). Hot Isostatic Pressing Control of Tungsten-Based Composites. Inorganics, 11(2). https://doi.org/10.3390/inorganics11020082 Publication ID: 106732
  • Stangebye, S., Lei, C., Kinghorn, A., Robertson, I., Kacher, J., Hattar, K., & Hattar, K. (2022). Dynamics of the gold–silicon eutectic reaction studied at limited length scales using in situ TEM and STEM. Journal of Materials Research, 37(21), pp. 3842-3854. https://doi.org/10.1557/s43578-022-00761-5 Publication ID: 80348
  • Adams, D.P., Lang, E., Clark, T., Sobczak, C., Custer, J.O., Scott, E., Hattar, K., Kalaswad, M., Beechem, T., Rodriguez, M.A., Appleton, B., Strachan, A., & Strachan, A. (2022). High-energy (MeV), heavy ion irradiation of chalcogenide phase change thin films [Conference Presenation]. https://doi.org/10.2172/2005960 Publication ID: 120576
  • Bachman, W.B., Kalaswad, M., King, M.P., Adams, D.P., Custer, J.O., Kotula, P.G., Rodriguez, M.A., Rosenberg, S.G., & Rosenberg, S.G. (2022). Investigating GeTe as an Ovonic Threshold Switch with Spectroscopic and Electronic Techniques [Conference Presenation]. https://doi.org/10.2172/2006008 Publication ID: 120764
  • Barrick, E., Rodelas, J., Brehm, J.R., Demott, R., Duran, P., Hattar, K., Herrmann, J., Ohlhausen, J.A., Robino, C.V., Small, K.A., & Small, K.A. (2022). The Influence of boride phase transformations on heat-affected zone liquation cracking susceptibility in laser welded 304L stainless steel [Conference Presenation]. https://doi.org/10.2172/2006054 Publication ID: 120944
  • Ohlhausen, J.A., Rodelas, J., Susan, D.F., Robino, C.V., Hattar, K., Herrmann, J., Duran, P., & Duran, P. (2022). Probing Grain Boundary Segregation in 304L Stainless Steel using Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) [Conference Presenation]. https://doi.org/10.2172/2006084 Publication ID: 121064
  • Boyce, B.L., Barr, C., Briggs, S., Chen, E.Y., Dingreville, R.P.M., Hattar, K., Heckman, N.M., Medlin, D.L., & Medlin, D.L. (2022). The role of grain boundary migration on irradiation-fatigue [Conference Presenation]. https://doi.org/10.2172/2005952 Publication ID: 120552
  • Kalaswad, M., Shrivastava, A., Desai, S., Custer, J.O., Khan, R.M., Addamane, S.J., Monti, J.M., Fowler, J.E., Rodriguez, M.A., Delrio, F.W., Kotula, P.G., D’Elia, M., Najm, H.N., Dingreville, R.P.M., Boyce, B.L., Adams, D.P., & Adams, D.P. (2022). Identifying process-structure-property correlations related to the development of stress in metal thin films by high-throughput characterization and simulation-based methods [Conference Poster]. https://doi.org/10.2172/2005990 Publication ID: 120696
  • Madden, N., Schoell, R., Lang, E.J., Hattar, K., & Hattar, K. (2022). In-situ Investigation of Amorphization and Microstructural Changes in LiAlO2 [Conference Presenation]. https://doi.org/10.2172/2005393 Publication ID: 119012
  • Hattar, K., Lang, E., & Lang, E. (2022). Extreme SEM [Conference Presenation]. https://doi.org/10.2172/2005682 Publication ID: 119868
  • Schoell, R., Madden, N., Koss, E.K., la Treadwell, R., Hernandez-Sanchez, B.A., Hattar, K., & Hattar, K. (2022). Thermal Shock Effects on Phenolic Composites [Conference Presenation]. https://doi.org/10.2172/2005919 Publication ID: 120424
  • Parkin, C., Moorehead, M., He, L., Hattar, K., Couet, A., & Couet, A. (2022). Diffusion-mitigated preservation of Mn and void swelling response under heavy ion irradiation at high temperature [Conference Presenation]. https://doi.org/10.2172/2006073 Publication ID: 121020
  • Lang, E., Schoell, R., Madden, N., Small, K.A., Hattar, K., & Hattar, K. (2022). Exploring thermal, mechanical, and electrical shock via in-situ electron microscopy [Conference Presenation]. https://doi.org/10.2172/2005708 Publication ID: 119968
  • Hattar, K., Lang, E., & Lang, E. (2022). Exploring Phase and Microstructural Stability through In situ SEM and TEM [Conference Presenation]. https://doi.org/10.2172/2004554 Publication ID: 117404
  • Lang, E., Roach, C., Devaraj, A., Hattar, K., & Hattar, K. (2022). In-situ Irradiation Induced Microstructural Evolution and Micro-Mechanical Properties of TPBAR 316 Stainless Steel Cladding [Conference Presenation]. https://doi.org/10.2172/2004826 Publication ID: 118128
  • Buddhanoy, M., Sakib, S., Surendranathan, U., Wasiolek, M., Hattar, K., Ray, B., & Ray, B. (2022). New Total-Ionizing-Dose Resistant Data Storing Technique for NAND Flash Memory. IEEE Transactions on Device and Materials Reliability, 22(3), pp. 438-446. https://doi.org/10.1109/tdmr.2022.3189673 Publication ID: 80949
  • Pfeifer, T.W., Tomko, J.A., Hoglund, E., Scott, E., Hattar, K., Huynh, K., Liao, M., Goorsky, M., Hopkins, P.E., & Hopkins, P.E. (2022). Measuring sub-surface spatially varying thermal conductivity of silicon implanted with krypton. Journal of Applied Physics, 132(7). https://doi.org/10.1063/5.0094876 Publication ID: 80092
  • Getto, E., Johnson, M., Maughan, M., Nathan, N., McMahan, J., Baker, B., Knipling, K., Briggs, S., Hattar, K., Swenson, M.J., & Swenson, M.J. (2022). Friction stir welding and self-ion irradiation effects on microstructure and mechanical properties changes within oxide dispersion strengthened steel MA956. Journal of Nuclear Materials, 567. https://doi.org/10.1016/j.jnucmat.2022.153795 Publication ID: 80787
  • Small, K.A., Demott, R., Barrick, E., Rodelas, J., Hattar, K., & Hattar, K. (2022). In-situ TEM laser heating for manipulation of cooling rates and observation of precipitate dissolution kinetics [Conference Presenation]. https://doi.org/10.2172/2006363 Publication ID: 122136
  • Abere, M.J., Beason, M.T., Reeves, R.V., Rodriguez, M.A., Kotula, P.G., Sobczak, C., Son, S.F., Yarrington, C.D., Adams, D.P., & Adams, D.P. (2022). The growth and nanothermite reaction of 2Al/3NiO multilayer thin films. Journal of Applied Physics, 132(3). https://doi.org/10.1063/5.0096787 Publication ID: 80024
  • Cunningham, W.S., Riano, J.S., Wang, W., Hwang, S., Hattar, K., Hodge, A.M., Trelewicz, J.R., & Trelewicz, J.R. (2022). Unraveling Thermodynamic and Kinetic Contributions to the Stability of Doped Nanocrystalline Alloys using Nanometallic Multilayers. Advanced Materials, 34(27). https://doi.org/10.1002/adma.202200354 Publication ID: 106504
  • Silling, S.A., Adams, D.P., Branch, B.A., & Branch, B.A. (2022). Peridynamic Modeling of the Dynamic Failure of Additively Manufactured Steel [Conference Presenation]. https://doi.org/10.2172/2003944 Publication ID: 115052
  • Alverson, D., Langhout, L., Barnes, L., Olds, D., Ravel, B., Beechem, T., Adams, D.P., Butala, M., & Butala, M. (2022). Atomic Structure Transformations of C-doped Ge2Sb2Te5 Using In-Situ X-ray Techniques [Conference Poster]. https://doi.org/10.2172/2004032 Publication ID: 115384
  • Clark, T., Hattar, K., Barr, C.M., Taylor, C.A., & Taylor, C.A. (2022). Sample Preparation and Experimental Design for In Situ Multi-Beam Transmission Electron Microscopy Irradiation Experiments. Journal of visualized experiments : JoVE, 184(184). https://doi.org/10.3791/61293 Publication ID: 74481
  • Lang, E.J., Burns, K., Wang, Y., Kotula, P.G., Kustas, A.B., Rodriguez, S., Aitkaliyeva, A., Hattar, K., & Hattar, K. (2022). Compositional Effects of Additively Manufactured Refractory High‐Entropy Alloys under High‐Energy Helium Irradiation. Nanomaterials, 12(12). https://doi.org/10.3390/nano12122014 Publication ID: 80865
  • Barr, C.M., Chen, E.Y., Nathaniel, J.E., Lu, P., Adams, D.P., Dingreville, R.P.M., Boyce, B.L., Hattar, K., Medlin, D.L., & Medlin, D.L. (2022). Irradiation-induced grain boundary facet motion: In situ observations and atomic-scale mechanisms. Science Advances, 8(23), pp. 1-58. https://doi.org/10.1126/sciadv.abn0900 Publication ID: 80682
  • Hattar, K. (2022). In-situ Nanomechanical Testing in Extreme and Coupled Environments [Conference Presenation]. https://doi.org/10.2172/2003671 Publication ID: 113984
  • Abere, M.J., Yyarrington, C.D., Kotula, P.G., McDonald, J.P., Adams, D.P., & Adams, D.P. (2022). Laser ignition pathways in Al/Pt reactive multilayers for short and ultrashort pulses [Conference Poster]. https://doi.org/10.2172/2003584 Publication ID: 113652
  • Kittell, D.E., Abere, M.J., Yarrington, C.D., Adams, D.P., & Adams, D.P. (2022). 3D simulations of spinlike flames in Co/Al multilayers with enhanced conduction losses. Combustion and Flame, 240. https://doi.org/10.1016/j.combustflame.2021.111952 Publication ID: 79969
  • Jacobs-Gedrim, R.B., Schiess, A., Lepkowski, S.M., Wahby, W., Hummel, G., & Hummel, G. (2022). TaOx resistive switching phenomena; physical properties and device applications [Conference Presenation]. https://doi.org/10.2172/2003009 Publication ID: 111516
  • Bachman, W.B., Muntifering, B.R., Snow, C., Senor, D., Hattar, K., & Hattar, K. (2022). Using in-situ TEM Triple Ion Beam Irradiations to Study the Effects of Deuterium, Helium, and Radiation Damage on TPBAR Components [Conference Poster]. https://doi.org/10.1017/S1431927617011746 Publication ID: 111256
  • Lang, E.J., Madden, N.J., Taylor, C., Price, P.M., Hattar, K., Tandon, R., & Tandon, R. (2022). Utilizing In Situ TEM to Decipher the Nanomechanical Properties of Helium Implanted Metals [Conference Presenation]. https://doi.org/10.2172/2003195 Publication ID: 112180
  • Price, P.M., Hattar, K., la Treadwell, R., Boyle, T., & Boyle, T. (2022). In-situ Laser Modification and Characterization of Materials in the TEM [Conference Poster]. https://www.osti.gov/biblio/2002941 Publication ID: 111248
  • Marinella, M., Xiao, T.P., Bennett, C., Wahby, W., Jacobs-Gedrim, R.B., Hughart, D.R., Fuller, E.J., Talin, A.A., Agarwal, S., & Agarwal, S. (2022). Characterization of Memory Devices for Energy Efficient Analog In-Memory Neural Computing at the Edge [Conference Presenation]. https://doi.org/10.2172/2003029 Publication ID: 111580
  • Hattar, K. (2022). What is the Physical Limit of Coupled In situ Microscopy Experiments? [Conference Presenation]. https://doi.org/10.2172/2003020 Publication ID: 111552
  • Adams, D.P., Lang, E.J., Clark, T., Sobczak, C., Custer, J.O., Scott, E., Hattar, K., Kalaswad, M., Beechem, T., Rodriguez, M.A., & Rodriguez, M.A. (2022). Effects of carbon addition on Ge2Sb2Te5 thin film structure and properties [Conference Presenation]. https://doi.org/10.2172/2003283 Publication ID: 112512
  • Branch, B.A., Brown, J.L., Ruggles, T., Silling, S.A., Mitchell, J.A., Adams, D.P., Specht, P.E., & Specht, P.E. (2022). Probing the effects of microstructure on material strength in additively manufactured 304L stainless steel through Richtmeyer-Meshkov instability experiments [Conference Presenation]. https://doi.org/10.2172/2003156 Publication ID: 112028
  • Hattar, K., McGieson, I., Bird, V.L., Barr, C.M., Reed, B.W., McKeown, J.T., Yi, F., Santala, M.K., & Santala, M.K. (2022). Crystallization kinetics and thermodynamics of an Ag–In–Sb–Te phase change material using complementary in situ microscopic techniques. Journal of Materials Research, 37(7), pp. 1281-1295. https://doi.org/10.1557/s43578-022-00486-5 Publication ID: 123268
  • Boyce, B.L., Argibay, N., Furnish, T.A., Hattar, K., Barr, C.M., Abdeljawad, F.F., Foiles, S.M., Clark, B.G., Chandross, M., & Chandross, M. (2022). Connecting Thermal Stability to Fatigue and Wear Resistance in Nanocrystalline Binary Alloys [Conference Poster]. https://www.osti.gov/biblio/2002201 Publication ID: 109768
  • Boyce, B.L., Barr, C.M., Duong, T., Bufford, D.C., Heckman, N.M., Demkowicz, M., Hattar, K., & Hattar, K. (2022). Fatigue-crack Healing in Pure Nanocrystalline Pt Enabled by Boundary Evolution [Conference Poster]. https://www.osti.gov/biblio/2002165 Publication ID: 109628
  • Boyce, B.L., Heckman, N.M., Hattar, K., Barr, C.M., Abdeljawad, F., Foiles, S., & Foiles, S. (2022). The Elusive Toughness of Nanocrystalline Alloys [Conference Poster]. https://www.osti.gov/biblio/2002179 Publication ID: 109684
  • Boyce, B.L., Adams, D.P., Hattar, K., Dingreville, R.P.M., Medlin, D.L., Abdeljawad, F.F., & Abdeljawad, F.F. (2022). Connecting thermal stability to fatigue and wear resistance in nanocrystalline metals [Conference Presenation]. https://doi.org/10.2172/2002143 Publication ID: 109540
  • Boyce, B.L., Hattar, K., Dingreville, R.P.M., Medlin, D.L., Monti, J.M., Barrios, A., Nathaniel, J.E., Milne, Z., Adams, D.P., & Adams, D.P. (2022). Self-organizing gradient nanostructures via chemical heterogeneities [Conference Presenation]. https://doi.org/10.2172/2002207 Publication ID: 109792
  • Boyce, B.L., Adams, D.P., Hattar, K., Dingreville, R.P.M., Medlin, D.L., Parrish, R., Abdeljawad, F.F., & Abdeljawad, F.F. (2022). Chemical gradients to control stability and mechanical behavior in nanostructured Pt-Au [Conference Presenation]. https://doi.org/10.2172/2002196 Publication ID: 109748
  • Boyce, B.L., Hattar, K., Dingreville, R.P.M., & Dingreville, R.P.M. (2022). Nanomechanics and nanometallurgy of boundaries: Contractor workshop presentation [Conference Poster]. https://www.osti.gov/biblio/2002192 Publication ID: 109732
  • Boyce, B.L., Adams, D.P., Hattar, K., Dingreville, R.P.M., Medlin, D.L., Parrish, R., Heckman, N.M., Abdeljawad, F., & Abdeljawad, F. (2022). Chemical gradients to control stability and mechanical behavior in nanostructured Pt-Au [Conference Poster]. https://www.osti.gov/biblio/2002222 Publication ID: 109852
  • Yang, C., Olsen, T., Lau, M.L., Smith, K.A., Hattar, K., Sen, A., Wu, Y., Hou, D., Narayanan, B., Long, M., Wharry, J.P., Xiong, H., & Xiong, H. (2022). In situ ion irradiation of amorphous TiO2 nanotubes. Journal of Materials Research, 37(6), pp. 1144-1155. https://doi.org/10.1557/s43578-022-00516-2 Publication ID: 80513
  • Buddhanoy, M., Kumari, P., Surendranathan, U., Olszewska-Wasiolek, M.A., Hattar, K., Ray, B., & Ray, B. (2022). Total Ionizing Dose Effects on Long-Term Data Retention Characteristics of Commercial 3-D NAND Memories. IEEE Transactions on Nuclear Science, 69(3), pp. 390-396. https://doi.org/10.1109/tns.2021.3124484 Publication ID: 76548
  • Kumari, P., Surendranathan, U., Olszewska-Wasiolek, M.A., Hattar, K., Bhat, N., Ray, B., & Ray, B. (2022). Analytical Bit-Error Model of NAND Flash Memories for Dosimetry Application. IEEE Transactions on Nuclear Science, 69(3), pp. 478-484. https://doi.org/10.1109/tns.2021.3125652 Publication ID: 76707
  • Jungjohann, K., Bachman, W.B., Harrison, K.L., Merrill, L.C., Randolph, S., Gannon, R., Milne, Z., Hattar, K., & Hattar, K. (2022). Nanoscale Characterization of Electrochemical-Mechanical Mechanisms with Electron Microscopy [Conference Presenation]. https://doi.org/10.2172/2001906 Publication ID: 108644
  • Hattar, K., Barr, C., Duong, T., Milne, Z., Bufford, D.C., Molkeri, A., Heckman, N.M., Adams, D.P., Demkowicz, M., Boyce, B.L., & Boyce, B.L. (2022). Exploring Nanoscale Fatigue through Coupled In-situ Microscopy and Modeling [Conference Presenation]. https://doi.org/10.2172/2001923 Publication ID: 108704
  • Surendranathan, U., Olszewska-Wasiolek, M.A., Hattar, K., Fleetwood, D.M., Ray, B., & Ray, B. (2022). Total Ionizing Dose Effects on Read Noise of MLC 3-D NAND Memories. IEEE Transactions on Nuclear Science, 69(3), pp. 321-326. https://doi.org/10.1109/tns.2021.3140204 Publication ID: 79948
  • Hattar, K., Schoell, R., Barr, C., Foiles-Ex, S., Alkayyli, M., Price, P.M., Adams, D.P., Abedljawad, F., Hopkins, E., Medlin, D.L., Demkowicz, M., Boyce, B.L., & Boyce, B.L. (2022). Comparing the Thermal, Mechanical, and Radiation Stability of Nanocrystalline Platinum-Gold [Conference Presenation]. https://doi.org/10.2172/2001921 Publication ID: 108696
  • Burns, K., Hattar, K., Tadj, K., Aitkaliyeva, A., Scott, M.C., & Scott, M.C. (2022). Dynamics of He Bubbles during Thermal Annealing: A Data-driven Approach [Conference Poster]. https://doi.org/10.2172/2001734 Publication ID: 108024
  • Kiani, M.T., Gan, L.T., Traylor, R., Yang, R., Barr, C.M., Hattar, K., Fan, J.A., Wendy Gu, X., & Wendy Gu, X. (2022). In Situ TEM tensile testing of bicrystals with tailored misorientation angles. Acta Materialia, 224. https://doi.org/10.1016/j.actamat.2021.117505 Publication ID: 76955
  • Lang, E.J., Cunningham, W.S., McCue, I., Trelewicz, J., Hattar, K., & Hattar, K. (2022). In-situ TEM of the Microstructure and He Behavior of AM W Alloys [Conference Presenation]. https://doi.org/10.2172/2001790 Publication ID: 108240
  • Adams, D.P., Appleton, R., McClure, Z., Strachan, A., & Strachan, A. (2022). Atomic Simulations of GST+C Phase Change Materials [Conference Presenation]. https://doi.org/10.2172/2001869 Publication ID: 108504
  • Small, K.A., Rodelas, J., Barrick, E., Demott, R., Robino, C.V., Hattar, K., & Hattar, K. (2022). In-situ TEM laser heating for manipulation of cooling rates and observation of precipitate dissolution kinetics [Conference Proceeding]. https://doi.org/10.1017/S1431927622007516 Publication ID: 108336
  • Barrick, E., Ohlhausen, J.A., Susan, D.F., Hattar, K., Herrmann, J., Duran, P., Rodelas, J., Robino, C.V., & Robino, C.V. (2022). Kinetics of phase transformations in boron-containing 304L stainless steel [Conference Presenation]. https://doi.org/10.2172/2001873 Publication ID: 108516
  • Nathaniel, J.E., Medlin, D.L., Hattar, K., Suri, P., Li, N., Wang, Y., Taheri, ., & Taheri, . (2022). Unravelling the Mechanisms of Irradiation Induced Phase Transformation in Nanocrystalline Gold [Conference Presenation]. https://doi.org/10.2172/2001882 Publication ID: 108548
  • Monti, J.M., Hopkins, E., Abdeljawad, F.F., Hattar, K., Boyce, B.L., Dingreville, R.P.M., & Dingreville, R.P.M. (2022). Stability of immiscible nanocrystalline alloys in compositional and thermal fields [Conference Presenation]. https://doi.org/10.2172/2001825 Publication ID: 108348
  • Marinella, M., Xiao, T.P., Bennett, C., Feinberg, B., Wahby, W., Jacobs-Gedrim, R.B., Agrawal, V., Puchner, H., Barnaby, H., Agarwal, S., & Agarwal, S. (2022). Energy Efficient Deep Neural Network Processing: Digital CMOS Limits and Prospects for Analog In-Memory Computing [Conference Presenation]. https://doi.org/10.2172/2002041 Publication ID: 109152
  • Adams, D.P., McClure, Z., Strachan, A., Appleton, R., & Appleton, R. (2022). Practical database enrichment strategies with iterative learning: Neural Network Potentials for Phase Change Memory [Conference Presenation]. https://doi.org/10.2172/2001868 Publication ID: 108500
  • Vizoso, D.E., Kosmidou, ., Balk, ., Hattar, K., Deo, ., Dingreville, R.P.M., & Dingreville, R.P.M. (2022). Size-dependent Radiation Damage Mechanisms in Nanowires and Nanoporous Structures [Conference Presenation]. https://doi.org/10.2172/2001746 Publication ID: 108072
  • Medlin, D.L., Barr, C., Nathaniel, J.E., Chen, E.Y., Lu, P., Adams, D.P., Dingreville, R.P.M., Boyce, B.L., Hattar, K., & Hattar, K. (2022). Interactions between interfacial disconnections and facet junctions: implications for faceting and boundary evolution [Conference Presenation]. https://doi.org/10.2172/2001884 Publication ID: 108556
  • Monti, J.M., Hopkins, E.M., Hattar, K., Abdeljawad, F.F., Boyce, B.L., Dingreville, R.P.M., & Dingreville, R.P.M. (2022). Stability of immiscible nanocrystalline alloys in compositional and thermal fields. Acta Materialia, 226. https://doi.org/10.1016/j.actamat.2022.117620 Publication ID: 79940
  • Lang, E.J., Dennett, C.A., Madden, N.J., Hattar, K., & Hattar, K. (2022). The In Situ Ion Irradiation Toolbox: Time-Resolved Structure and Property Measurements. JOM, 74(1), pp. 126-142. https://doi.org/10.1007/s11837-021-04993-4 Publication ID: 76780
  • Flicker, D., Carney, J., Cusentino, M.A., Hattar, K., Steinkamp, M., la Treadwell, R., & la Treadwell, R. (2022). Assessment of Sandia’s 2021 Pilot Program for Research Traineeships to Broaden and Diversify Fusion Energy Science: Development and Rapid Screening of Refractory Multi-Principal Elemental Composites for Plasma Facing Components. https://doi.org/10.2172/1855066 Publication ID: 79970
  • Goeke, R.S., Simpson, S., Coombes, K., Alam, K.M., Adams, D.P., & Adams, D.P. (2022). TPD Results on Electrode Materials for Pulsed Power Vacuum Environments [Conference Poster]. https://www.osti.gov/biblio/2001648 Publication ID: 107684
  • Wang, F., Yan, X., Chen, X., Snyder, N., Nastasi, M., Hattar, K., Cui, B., & Cui, B. (2021). Pulsed electric current joining of oxide-dispersion-strengthened austenitic steels. Journal of Materials Science, 56(34), pp. 19216-19227. https://doi.org/10.1007/s10853-021-06495-9 Publication ID: 75536
  • Daly, L., Lee, M.R., Hallis, L.J., Ishii, H.A., Bradley, J.P., Bland, P.A., Saxey, D.W., Fougerouse, D., Rickard, W.D.A., Forman, L.V., Timms, N.E., Jourdan, F., Reddy, S.M., Salge, T., Zakaria, ., Quadir, Z., Christou, E., Cox, M.A., Aguiar, J.A., … Thompson, M.S. (2021). Solar wind contributions to Earth’s oceans. Nature Astronomy, 5(12), pp. 1275-1285. https://doi.org/10.1038/s41550-021-01487-w Publication ID: 79373
  • Dennett, C.A., Dacus, B.R., Barr, C.M., Clark, T., Bei, H., Zhang, Y., Short, M.P., Hattar, K., & Hattar, K. (2021). The dynamic evolution of swelling in nickel concentrated solid solution alloys through in situ property monitoring. Applied Materials Today, 25. https://doi.org/10.1016/j.apmt.2021.101187 Publication ID: 75813
  • Marinella, M., Xiao, T.P., Wahby, W., Jacobs-Gedrim, R.B., Bennett, C., Robinson, D.A., Fuller, E.J., Talin, A.A., Agarwal, S., & Agarwal, S. (2021). Devices for Efficient Analog In-Memory Neural Computing at the Edge [Conference Presenation]. https://doi.org/10.2172/2001624 Publication ID: 107596
  • Taylor, C.A., Robinson, D.B., Sugar, J.D., Lang, E.J., Barr, C.M., Wang, Y., Snow, C., Hattar, K., & Hattar, K. (2021). Microstructural Effects of High Dose Helium Implantation in ErD2. Materialia, 22. https://doi.org/10.1016/j.mtla.2021.101280 Publication ID: 106371
  • Smyth, C.M., Cain, J.M., Lang, E.J., Madden, N.J., Hattar, K., Yan, X., Yuan, J., Bland, M., Ohta, T., Sangwan, V., Hersam, M., Chou, S.S., Lu, T., & Lu, T. (2021). Heavy Ion Irradiation Effects on MoS2 Memtransistors [Conference Presenation]. https://doi.org/10.2172/1899528 Publication ID: 76880
  • Hattar, K. (2021). TailoringHelium InducedBlistering in Tritide Materials [Conference Presenation]. https://doi.org/10.2172/1899487 Publication ID: 76520
  • Hattar, K., Lang, E.J., Dillon, S., & Dillon, S. (2021). Irradiation Creep and Fatigue Observed via In-situ Electron Microscopy [Conference Presenation]. https://doi.org/10.2172/1899488 Publication ID: 76706
  • Burns, K., Hattar, K., Aitkaliyeva, A., & Aitkaliyeva, A. (2021). Direct Determination of the Thermal Expansion Coefficient of Low-dimensional MoS2 [Conference Poster]. https://doi.org/10.2172/1900568 Publication ID: 76990
  • Young, J.M., Byers, T.A., Lang, E.J., Glass, G.A., Hattar, K., & Hattar, K. (2021). Synthesis of magnesiowüstite nanocrystallites embedded in an amorphous silicate matrix via low energy multiple ion implantations. Planetary and Space Science, 206. https://doi.org/10.1016/j.pss.2021.105319 Publication ID: 79761
  • Lang, E.J., Taylor, C., Parrish, R., Price, P.M., Madden, N.J., Tandon, R., Hattar, K., & Hattar, K. (2021). Effects of He on Nanoscale Mechanical Properties of Er [Conference Presenation]. https://doi.org/10.2172/1891434 Publication ID: 76165
  • Hattar, K., Lang, E.J., Devaraj, A., Roach, C., & Roach, C. (2021). Comparing Neutron and Ion Irradiation by Atom Probe Tomography and In-situ Electron Microscopy [Slides] [Conference Presenation]. https://doi.org/10.2172/1888138 Publication ID: 75772
  • Zhang, X., Wang, F., Yan, X., Li, X.Z., Hattar, K., Cui, B., & Cui, B. (2021). Nanostructured Oxide-Dispersion-Strengthened CoCrFeMnNi High-Entropy Alloys with High Thermal Stability. Advanced Engineering Materials, 23(9). https://doi.org/10.1002/adem.202100291 Publication ID: 78802
  • Jawaharram, G.S., Barr, C.M., Hattar, K., Dillon, S.J., & Dillon, S.J. (2021). Evidence for a high temperature whisker growth mechanism active in tungsten during in situ nanopillar compression. Nanomaterials, 11(9). https://doi.org/10.3390/nano11092429 Publication ID: 75787
  • Hummel, G., Patrizi, G., Young, A.I., Schroeder, K.M., Ruyack, A., Schiess, A., Finnegan, P.S., Adams, D.P., Nordquist, C., & Nordquist, C. (2021). Germanium Telluride Chalcogenide Switches for RF Applications. https://doi.org/10.2172/1821550 Publication ID: 75822
  • Adams, D.P. (2021). Basic Research of Intrinsic, Tamper Indication Markings and Patterns Defined by Pulsed Laser Irradiation: 2015 Annual Report IACRO 13-5897I (DTRA Project Year End Report). https://doi.org/10.2172/1813666 Publication ID: 78982
  • Vizoso, D., Kosmidou, M., Balk, ., Hattar, K., Deo, C., Dingreville, R.P.M., & Dingreville, R.P.M. (2021). Size-dependent radiation damage mechanisms in nanowires and nanoporous structures. Acta Materialia, 215. https://doi.org/10.1016/j.actamat.2021.117018 Publication ID: 78670
  • Hattar, K., Lang, E.J., Cunningham, W.S., Mathadhu, S., Trelewicz, J., & Trelewicz, J. (2021). In-situ Irradiation, Helium Implantation and Heating to Elucidate Mechanisms in Tungsten Alloys [Slides] [Conference Presenation]. https://doi.org/10.2172/1877560 Publication ID: 79374
  • Lang, E.J., Homer, E., Bair, J., Marshall, M., Padilla, H.A., Boyce, B.L., Frazer, D., Hosemann, P., Hattar, K., & Hattar, K. (2021). In-situ TEM Cryoindentation of Nanocrystalline Copper [Conference Presenation]. https://doi.org/10.2172/1888433 Publication ID: 79207
  • Clark-Ex, T., Scott, E., Adams, D.P., Hattar, K., & Hattar, K. (2021). In-situ TEM irradiation induced amorphization of Ge2Sb2Te5 [Conference Presenation]. https://doi.org/10.2172/1889055 Publication ID: 79457
  • Hattar, K., Lang, E.J., Taylor, C., Pratt, S., Nenoff, T.M., & Nenoff, T.M. (2021). Automated Crystal Orientation Mapping with a Liquid-Cell TEM [Conference Poster]. https://doi.org/10.2172/1884058 Publication ID: 79295
  • Matthews, B.E., Sassi, M., Barr, C., Ophus, C., Kaspar, T.C., Jiang, W., Hattar, K., Spurgeon, S.R., & Spurgeon, S.R. (2021). Percolation of Ion-Irradiation-Induced Disorder in Complex Oxide Interfaces. Nano Letters, 21(12), pp. 5353-5359. https://doi.org/10.1021/acs.nanolett.1c01651 Publication ID: 103604
  • Adams, D.P., Saltonstall, C., Bachman, W.B., Abere, M.J., Sobczak, C., Yarrington, C.D., Kotula, P.G., Rodriguez, M.A., Goeke, R.S., & Goeke, R.S. (2021). (INVITED) Investigating a Few Remaining Unknowns of Reactive Multilayers affecting Ignition and Self-Propagating Reactions [Conference Poster]. https://www.osti.gov/biblio/1884116 Publication ID: 79053
  • Kumari, P., Surendranathan, U., Olszewska-Wasiolek, M.A., Hattar, K., Ray, A.B., & Ray, A.B. (2021). Total-Ionizing-Dose Effects on Long-term Data Retention Characteristics of Commercial 3D NAND Memories [Conference Poster]. https://doi.org/10.2172/1873468 Publication ID: 78897
  • Surendranathan, U., Olszewska-Wasiolek, M.A., Hattar, K., Fleetwood, D., Ray-Ex, B., & Ray-Ex, B. (2021). Total-Ionizing-Dose Effects on Read Noise of MLC 3D NAND Memories [Conference Poster]. https://doi.org/10.2172/1873467 Publication ID: 78896
  • Lang, E.J., Hooghan, K., Hattar, K., Richter, T., Nadzekya, A., & Nadzekya, A. (2021). Deciphering Liquid Metal Embrittlement and Altered FIB Damage Microstructures on Aluminum [Conference Presenation]. https://doi.org/10.2172/1875389 Publication ID: 79017
  • Adams, D.P., Abere, M.J., Kotula, P.G., Yarrington, C.D., Sobczak, C., Saltonstall, C., Bachman, W.B., & Bachman, W.B. (2021). Investigating Transport Processes in Reactive Multilayer Films [Conference Poster]. https://www.osti.gov/biblio/1883530 Publication ID: 78984
  • Dillon, S., Coffman, K., Grosso, R., Jawaharram, G., Feng, L., Ma, Y., dos Santos Mucillo, E.N., Hattar, K., Barr, C., Castro, R., Ouyang, J., Garcia, R.E., Abdeljawad, F., & Abdeljawad, F. (2021). Interfacial Transport Mechanisms Characterized using Ultrahigh Temperature in situ TEM Nanomechanical Testing [Conference Presenation]. https://doi.org/10.2172/1872514 Publication ID: 78785
  • Bennett, C., Xiao, T.P., Leonard, T., Alamdar, M., Manuel, J., Jacobs-Gedrim, R.B., Xue, L., Vizkelethy, G., Bielejec, E.S., Incorvia, J.A., Marinella, M., & Marinella, M. (2021). Investigation of Total Ionizing Dose on Domain-wall Magnetic Tunnel Junction Logic Devices (Presentation) [Conference Presenation]. https://doi.org/10.2172/1874876 Publication ID: 79031
  • Adams, D.P., Moody, N.R., Yarrington, C.D., & Yarrington, C.D. (2021). Basic Research of Intrinsic, Tamper-Indication Markings and Patterns Defined by Pulsed Laser Irradiation (2015 Update) [Conference Poster]. https://www.osti.gov/biblio/1889605 Publication ID: 78981
  • Scott, E., Perez, C., Saltonstall, C., Adams, D.P., Carter Hodges, V., Asheghi, M., Goodson, K.E., Hopkins, P.E., Leonhardt, D., Ziade, E., & Ziade, E. (2021). Simultaneous thickness and thermal conductivity measurements of thinned silicon from 100 nm to 17 μ m. Applied Physics Letters, 118(20). https://doi.org/10.1063/5.0050888 Publication ID: 78473
  • Abere, M.J., Yarrington, C.D., Kotula, P.G., McDonald, J.P., Adams, D.P., & Adams, D.P. (2021). Variable Laser Ignition Pathways in Al/Pt Reactive Multilayers across 10 Decades of Pulse Duration. Journal of Physical Chemistry C, 125(18), pp. 9756-9765. https://doi.org/10.1021/acs.jpcc.1c01776 Publication ID: 78387
  • Ajantiwalay, T., Nagel, L., Maloy, S., Hattar, K., Mecholsky, J.J., Aitkaliyeva, A., & Aitkaliyeva, A. (2021). Investigation of hardening mechanisms and size effects in proton-irradiated HT-9 steels. Journal of Nuclear Materials, 548. https://doi.org/10.1016/j.jnucmat.2021.152866 Publication ID: 77312
  • Kumari, P., Surendranathan, U., Olszewska-Wasiolek, M.A., Hattar, K., Bhat, N.P., Ray, B., & Ray, B. (2021). Radiation-Induced Error Mitigation by Read-Retry Technique for MLC 3-D NAND Flash Memory. IEEE Transactions on Nuclear Science, 68(5), pp. 1032-1039. https://doi.org/10.1109/tns.2021.3052909 Publication ID: 75178
  • Stangebye, S., Zhang, Y., Gupta, S., Hosseinian, E., Yu, F., Barr, C., Hattar, K., Pierron, O., Zhu, T., Kacher, J., & Kacher, J. (2021). Grain growth of nanocrystalline aluminum under tensile deformation: A combined in situ TEM and atomistic study. Materialia, 16. https://doi.org/10.1016/j.mtla.2021.101068 Publication ID: 78230
  • Xiao, T.P., Bennett, C., Mancoff, F.B., Manuel, J., Hughart, D.R., Jacobs-Gedrim, R.B., Bielejec, E.S., Vizkelethy, G., Sun, J., Aggarwal, S., Arghavani, R., Marinella, M., & Marinella, M. (2021). Heavy-Ion-Induced Displacement Damage Effects in Magnetic Tunnel Junctions with Perpendicular Anisotropy. IEEE Transactions on Nuclear Science, 68(5), pp. 581-587. https://doi.org/10.1109/tns.2021.3057348 Publication ID: 77543
  • Hattar, K. (2021). Mechanical B ehavior of Irradiated M etals [Presentation]. https://www.osti.gov/biblio/1877534 Publication ID: 78156
  • Barr, C.M., Duong, T., Bufford, D.C., Molkeri, A., Heckman, N.M., Adams, D.P., Srivastava, A., Demkowicz, M., Boyce, B.L., Hattar, K., & Hattar, K. (2021). High-Cycle Fatigue In Situ in the Transmission Electron Microscope [Conference Presenation]. https://doi.org/10.2172/1863859 Publication ID: 78128
  • Kang, J.G., Jang, H., Ma, J., Yang, Q., Hattar, K., Diao, Z., Yuan, R., Zuo, J., Sinha, S., Cahill, D.G., Braun, P.V., & Braun, P.V. (2021). Ultralow Thermal Conductivity in Nanoporous Crystalline Fe3O4. Journal of Physical Chemistry. C, 125(12), pp. 6897-6908. https://doi.org/10.1021/acs.jpcc.1c00411 Publication ID: 103364
  • Hattar, K., Jungjohann, K.L., & Jungjohann, K.L. (2021). Possibility of an integrated transmission electron microscope: enabling complex in-situ experiments. Journal of Materials Science, 56(9), pp. 5309-5320. https://doi.org/10.1007/s10853-020-05598-z Publication ID: 75137
  • Hattar, K. (2021). Deconvoluting Mechanism in Complex Environments via In-situ TEM [Conference Presenation]. https://doi.org/10.2172/1854440 Publication ID: 77480
  • Hong, D., Hattar, K., Li, N., Paranjape, H., Schaffer, J., Hinojos, A., Mills, M., Yu, T., Wang, Y., Anderson, P., & Anderson, P. (2021). Pseudoelastic Response of Ion-Implanted Nickel-Titanium Shape Memory Alloy: Combining Experimentation and Forward Modeling [Conference Presenation]. https://doi.org/10.2172/1854069 Publication ID: 77425
  • Milne, Z., Jungjohann, K.L., Hattar, K., & Hattar, K. (2021). Combined-Extreme In Situ Experiments by Redesign of a Transmission Electron Microscope Pole-Piece Gap [Conference Presenation]. https://doi.org/10.2172/1855930 Publication ID: 77650
  • Liu, S.X., Marinella, M., Incorvia, J.A., Bennett, C., Xiao, T.P., Jacobs-Gedrim, R.B., & Jacobs-Gedrim, R.B. (2021). Radiation Hard Nonvolatile Memory and Logic Based on Magnetic Tunnel Junctions: Magnetic computing device simulations for neural network applications [Presentation]. https://www.osti.gov/biblio/1861011 Publication ID: 77847
  • Barr, C.M., Foiles, S.M., Alkayyali, M., Mahmood, Y., Price, P.M., Adams, D.P., Boyce, B.L., Abdeljawad, F., Hattar, K., & Hattar, K. (2021). The role of grain boundary character in solute segregation and thermal stability of nanocrystalline Pt-Au. Nanoscale, 13(6), pp. 3552-3563. https://doi.org/10.1039/d0nr07180c Publication ID: 80588
  • Scott, E., Braun, J.L., Hattar, K., Sugar, J.D., Gaskins, J.T., Goorsky, M., King, S.W., Hopkins, P.E., & Hopkins, P.E. (2021). Probing thermal conductivity of subsurface, amorphous layers in irradiated diamond. Journal of Applied Physics, 129(5). https://doi.org/10.1063/5.0038972 Publication ID: 75061
  • Scott, E., Hattar, K., Braun, J., Sugar, J.D., King, S., Goorsky, M., Hopkins, P., & Hopkins, P. (2021). Phase-dictated thermal conductivity response in carbon systems exposed to ion irradiation [Conference Presenation]. https://doi.org/10.2172/1847031 Publication ID: 77324
  • Parrish, R.J., Bufford, D.C., Frazer, D.M., Taylor, C.A., Gutierrez-Kolar, J., Buller, D.L., Boyce, B.L., Hattar, K., & Hattar, K. (2021). Exploring Coupled Extreme Environments via In-situ Transmission Electron Microscopy. Microscopy Today, 29(1), pp. 28-34. https://doi.org/10.1017/s1551929520001595 Publication ID: 77486
  • Islam, Z., Barr, C.M., Hattar, K., Haque, A., & Haque, A. (2021). Defect annihilation in heavy ion irradiated polycrystalline gold. Materials Letters, 282. https://doi.org/10.1016/j.matlet.2020.128694 Publication ID: 70943
  • Taylor, C., Hattar, K., & Hattar, K. (2021). Hydrogen Isotope Effects in Materials [Presentation]. https://www.osti.gov/biblio/1843543 Publication ID: 75193
  • Suri, P.K., Nathaniel, J.E., Li, N., Baldwin, J.K., Wang, Y., Hattar, K., Taheri, M.L., & Taheri, M.L. (2020). Ion irradiation induced phase transformation in gold nanocrystalline films. Scientific Reports, 10(1). https://doi.org/10.1038/s41598-020-74779-2 Publication ID: 100360
  • Guo, Q., Gu, Y., Barr, C.M., Koenig, T., Hattar, K., Li, L., Thompson, G.B., & Thompson, G.B. (2020). In situ indentation and high cycle tapping deformation responses in a nanolaminate crystalline/amorphous metal composite. Materials Science and Engineering: A, 798(NA), pp. 140074-. https://doi.org/10.1016/j.msea.2020.140074 Publication ID: 74598
  • Gill, S.K., Topsakal, M., Jossou, E., Hattar, K., Mausz, J., Elbakhshwan, M., Yan, H., Chu, Y.S., Sun, C., He, L., Gan, J., Ecker, L., & Ecker, L. (2020). Impact of krypton irradiation on a single crystal tungsten: Multi-modal X-ray imaging study. Scripta Materialia, 188, pp. 296-301. https://doi.org/10.1016/j.scriptamat.2020.07.024 Publication ID: 99388
  • Fuller, E.J., Li, Y., Agarwal, S., Jacobs-Gedrim, R.B., James, C.D., Marinella, M., & Marinella, M. (2020). Floating-gate memory based on ion-insertion electrodes for neuromorphic computing [Conference Poster]. https://www.osti.gov/biblio/1831565 Publication ID: 71756
  • Mathaudhu, S.N., Salvador, H., Clark, T., Ramos, E., Shahrezaei, S., Hattar, K., & Hattar, K. (2020). Gradatim Ferociter : Exploring the Grain Size Stability of Heterogeneous Copper in Thermal Mechanical and Radiation Environments [Conference Presenation]. https://doi.org/10.2172/1831018 Publication ID: 71565
  • Hattar, K. (2020). Exploring Extreme Environments via In-situ Electron Microscopy [Conference Presenation]. https://doi.org/10.2172/1830990 Publication ID: 71673
  • Spurgeon, S.R., Ophus, C., Jones, L., Kalinin, S.V., Olszta, M.J., Dunin-Borkowski, R.E., Salmon, N., Hattar, K., Yang, W.D., Sharma, R., du, Y., Chiaramonti, A., Zheng, H., Buck, E.C., Kovarik, L., Penn, R.L., Li, D., Zhang, X., Murayama, M., Taheri, M.L., & Taheri, M.L. (2020). Towards data-driven next-generation transmission electron microscopy. Nature Materials, 20(3), pp. 274-279. https://doi.org/10.1038/s41563-020-00833-z Publication ID: 100892
  • Scott, E., Ziade, E., Saltonstall, C., McDonald, A., Rodriguez, M.A., Hopkins, P.E., Bachman, W.B., Adams, D.P., & Adams, D.P. (2020). Thermal conductivity of (Ge2Sb2Te5)1–xCx phase change films. Journal of Applied Physics, 128(15). https://doi.org/10.1063/5.0023476 Publication ID: 71258
  • Dennett, C.A., Dacus, B.R., Clark, T., Barr, C.M., Zhang, Y., Hattar, K., Short, M.P., & Short, M.P. (2020). In situ observation of short- and longtimescale material property evolution under extreme conditions [Conference Presenation]. https://doi.org/10.2172/1829241 Publication ID: 71510
  • Negrete, O.A., Bradfute, S., Larson, S.R., Sinha, A., Coombes, K., Goeke, R.S., Keenan, L.A., Duay, J., van Heukelom, M., Meserole, S., Jacobs-Gedrim, R.B., & Jacobs-Gedrim, R.B. (2020). Photocatalytic Material Surfaces for SARS-CoV-2 Virus Inactivation. https://doi.org/10.2172/1669200 Publication ID: 99896
  • Levy, J.E., Adams, D.P., Nichols, D.R., Harrison, R.K., Jordan, M., Claus, L., Dorsey, D.J., & Dorsey, D.J. (2020). Multi-Layered Solid-State Neutron Sensor [Conference Presenation]. https://doi.org/10.2172/1830935 Publication ID: 71397
  • Xiao, T.P., Bennett, C., Mancoff, F., Manuel, J., Hughart, D.R., Jacobs-Gedrim, R.B., Bielejec, E.S., Vizkelethy, G., Sun, J., Aggarwal, S., Arghavani, R., Marinella, M., & Marinella, M. (2020). Heavy-ion-induced displacement damage effects in magnetic tunnel junctions with perpendicular anisotropy [Conference Presenation]. https://doi.org/10.2172/1831024 Publication ID: 71473
  • Levy, J.E., Adams, D.P., Nichols, D.R., Harrison, R.K., Jordan, M., Claus, L., Dorsey, D.J., & Dorsey, D.J. (2020). Multi-Layered Solid-State Neutron Sensor [Conference Proceeding]. https://www.osti.gov/biblio/1824932 Publication ID: 71142
  • Kumari, P., Huang, S., Olszewska-Wasiolek, M.A., Hattar, K., Ray, B., & Ray, B. (2020). Layer-Dependent Bit Error Variation in 3-D NAND Flash under Ionizing Radiation. IEEE Transactions on Nuclear Science, 67(9), pp. 2021-2027. https://doi.org/10.1109/tns.2020.3014261 Publication ID: 74605
  • Xiao, T.P., Bennett, C., Hu, X., Feinberg, B., Jacobs-Gedrim, R.B., Agarwal, S., Brunhaver, J., Friedman, J., Incorvia, J.A., Marinella, M., & Marinella, M. (2020). Energy-efficient stateful logic with magnetic domain walls [Presentation]. https://doi.org/10.1117/12.2568658 Publication ID: 74758
  • Hattar, K., Briggs, S.A., Barr, C.M., Heckman, N.M., Clark, T., Boyce, B.L., & Boyce, B.L. (2020). Exploring the Extremes via In-Situ Scanning Electron Microscopy [Conference Poster]. https://doi.org/10.26226/morressier.5f5f8e69aa777f8ba5bd60d0 Publication ID: 71009
  • Parrish, R., Hattar, K., & Hattar, K. (2020). In-situ Characterization of Nanomaterials in Extreme Environments with the I3TEM [Conference Poster]. https://www.osti.gov/biblio/1822624 Publication ID: 70961
  • Vikrant, K.S.N., Grosso, R.L., Feng, L., Muccillo, E.N.S., Muche, D.N.F., Jawaharram, G.S., Barr, C.M., Monterrosa, A.M., Castro, R.H.R., Garcia, R.E., Hattar, K., Dillon, S.J., & Dillon, S.J. (2020). Ultrahigh temperature in situ transmission electron microscopy based bicrystal coble creep in zirconia I: Nanowire growth and interfacial diffusivity. Acta Materialia, 199, pp. 530-541. https://doi.org/10.1016/j.actamat.2020.08.069 Publication ID: 74722
  • Grosso, R.L., Vikrant, K.S.N., Feng, L., Muccillo, E.N.S., Muche, D.N.F., Jawaharram, G.S., Barr, C.M., Monterrosa, A.M., Castro, R.H.R., Garcia, R.E., Hattar, K., Dillon, S.J., & Dillon, S.J. (2020). Ultrahigh temperature in situ transmission electron microscopy based bicrystal coble creep in Zirconia II: Interfacial thermodynamics and transport mechanisms. Acta Materialia, 200, pp. 1008-1021. https://doi.org/10.1016/j.actamat.2020.08.070 Publication ID: 74723
  • Bahena, J.A., Heckman, N.M., Barr, C.M., Hattar, K., Boyce, B.L., Hodge, A.M., & Hodge, A.M. (2020). Development of a heterogeneous nanostructure through abnormal recrystallization of a nanotwinned Ni superalloy. Acta Materialia, 195, pp. 132-140. https://doi.org/10.1016/j.actamat.2020.05.057 Publication ID: 103456
  • Kiani, M.T., Hattar, K., Gu, X.W., & Gu, X.W. (2020). In Situ TEM Study of Radiation Resistance of Metallic Glass–Metal Core–Shell Nanocubes. ACS Applied Materials and Interfaces, 12(36), pp. 40910-40916. https://doi.org/10.1021/acsami.0c10664 Publication ID: 74611
  • Hopkins, E., Hattar, K., Barr, C., Clark, T., Parrish, R., Bachman, W.B., & Bachman, W.B. (2020). In-Situ Annealing of Pt-Au Alloys: Grain Growth with Temperature and Composition Dependence [Presentation]. https://www.osti.gov/biblio/1877563 Publication ID: 74249
  • Specht, P.E., Adams, D.P., Mitchell, J.A., Brown, J.L., Branch, B.A., Silling, S.A., Wise, J.L., Brown, D., Palmer, T., & Palmer, T. (2020). Response of Wrought and Additively Manufactured 304L Stainless Steel at Mbar Stresses [Presentation]. https://www.osti.gov/biblio/1812161 Publication ID: 74340
  • Rodriguez, M.A., Dejong, S.A., Adams, D.P., Scott, E., Griego, J.J.M., Valdez, N.R., & Valdez, N.R. (2020). Employing Principal Component Analysis for XRD Signal Extraction of Germanium Antimony Telluride Thin Films During Crystallization [Conference Poster]. https://www.osti.gov/biblio/1811815 Publication ID: 74291
  • Saltonstall, C., McClure, Z.D., Abere, M.J., Guzman, D., Reeve, S.T., Strachan, A., Kotula, P.G., Adams, D.P., Bachman, W.B., & Bachman, W.B. (2020). Complexion dictated thermal resistance with interface density in reactive metal multilayers. Physical Review B, 101(24). https://doi.org/10.1103/physrevb.101.245422 Publication ID: 73846
  • Hattar, K. (2020). In situ TEM Failures in Fatigue and Other Extreme Environments [Conference Poster]. https://www.osti.gov/biblio/1805330 Publication ID: 73949
  • Ali, A., Kim, H.G., Hattar, K., Briggs, S., Jun Park, D., Hwan Park, J., Lee, Y., & Lee, Y. (2020). Ion irradiation effects on Cr-coated zircaloy-4 surface wettability and pool boiling critical heat flux. Nuclear Engineering and Design, 362, pp. 1-19. https://doi.org/10.1016/j.nucengdes.2020.110581 Publication ID: 74604
  • Wang, Y., Hattar, K., & Hattar, K. (2020). Radiation Damage in Materials—Helium Effects. Materials, 13(9). https://doi.org/10.3390/ma13092143 Publication ID: 99412
  • Taylor, C.A., Sugar, J.D., Robinson, D.B., Hattar, K., & Hattar, K. (2020). Using In Situ TEM Helium Implantation and Annealing to Study Cavity Nucleation and Growth. JOM, 72(5), pp. 2032-2041. https://doi.org/10.1007/s11837-020-04117-4 Publication ID: 74313
  • Heckman, N.M., Padilla, H.A., Michael, J.R., Barr, C.M., Clark, B.G., Hattar, K., Boyce, B.L., & Boyce, B.L. (2020). Rethinking scaling laws in the high-cycle fatigue response of nanostructured and coarse-grained metals. International Journal of Fatigue, 134(C). https://doi.org/10.1016/j.ijfatigue.2020.105472 Publication ID: 71486
  • Treece, A., Corbin, W.C., Caskey, S.A., Krishnakumar, R., Williams, K.P., Branch, D.W., Harmon, B.N., Polsky, R., Bauer, T.L., Finley, P.D., Jeffers, R., Safta, C., Makvandi, M., Laird, C., Domino, S.P., Ho, C.K., Grillet, A.M., Pacheco, J.L., Nemer, M., … Thelen, P.M. (2020). COVID-19 LDRD Project Summaries. https://doi.org/10.2172/1617440 Publication ID: 105920
  • Marinella, M., Agarwal, S., Bennett, C., Xiao, T.P., Jacobs-Gedrim, R.B., Hughart, D.R., Fuller, E.J., Talin, A.A., Barnaby, H., Incorvia, J.A., & Incorvia, J.A. (2020). Efficient Neural Network Processing with Analog In-Memory Computing [Conference Poster]. https://www.osti.gov/biblio/1780947 Publication ID: 73371
  • Marinella, M., Agarwal, S., Bennett, C., Jacobs-Gedrim, R.B., Hughart, D.R., Fuller, E.J., Hsia, A., Talin, A.A., & Talin, A.A. (2020). Energy Efficient Neural Network Training with Analog Synapses: Challenges and Opportunities [Conference Poster]. https://www.osti.gov/biblio/1780964 Publication ID: 73368
  • Marinella, M., Agarwal, S., Bennett, C., Jacobs-Gedrim, R.B., Hughart, D.R., Bachman, W.B., Talin, A.A., Incorvia, J.A., & Incorvia, J.A. (2020). Neuromorphic Computing with Analog Nonvolatile Memory [Conference Poster]. https://www.osti.gov/biblio/1783628 Publication ID: 73366
  • Parrish, R., Hattar, K., Barr, C.M., Tucker, G., Gupta, A., & Gupta, A. (2020). In-Situ TEM Characterization and Molecular Dynamics Simulation of the Microstructural Response of Nanocrystalline Gold to Rapid Thermal Annealing [Conference Poster]. https://www.osti.gov/biblio/1773663 Publication ID: 73183
  • Hattar, K. (2020). Exploring the Extremes of Mechanical Behavior through In-situ Electron Microscopy [Conference Poster]. https://www.osti.gov/biblio/1769560 Publication ID: 72921
  • Parrish, R., Hattar, K., Barr, C.M., Tucker, G., Gupta, A., & Gupta, A. (2020). TEM Comparison of Neutron and Ion Beam Damage in Nanocrystalline Gold [Conference Poster]. https://www.osti.gov/biblio/1773662 Publication ID: 73182
  • Murphy, R.D., Lawrence, S.K., Moody, N.R., Yarrington, C.D., Rockwell, G.W., Adams, D.P., & Adams, D.P. (2020). Basic Research of Intrinsic Tamper-Indication Markings and Patterns Defined by Pulsed Laser Irradiation: FY 14 Update [Presentation]. https://www.osti.gov/biblio/1773593 Publication ID: 73178
  • Hattar, K. (2020). Tailoring the Thermal Mechanical and Acoustic Properties through Ion Beam Modification [Conference Poster]. https://www.osti.gov/biblio/1769561 Publication ID: 72922
  • Adams, D.P., Abere, M.J., Sobczak, C., Kotula, P.G., Bachman, W.B., Saltonstall, C., McClure, Z., Strachan, A., & Strachan, A. (2020). Revealing the structure and composition of small interfacial volumes composed within reactive multilayer thin films [Conference Poster]. https://www.osti.gov/biblio/1773596 Publication ID: 73177
  • Battaile, C., Adams, D.P., Moore, N.W., Prime, M.B., Wise, J.L., & Wise, J.L. (2020). Simulating the Effects of Microscale Heterogeneities on the Mechanical Response of Tantalum during High-Rate Loading [Conference Poster]. https://www.osti.gov/biblio/1770548 Publication ID: 72987
  • Schuler, J.D., Grigorian, C.M., Barr, C.M., Boyce, B.L., Hattar, K., Rupert, T.J., & Rupert, T.J. (2020). Amorphous intergranular films mitigate radiation damage in nanocrystalline Cu-Zr. Acta Materialia, 186, pp. 341-354. https://doi.org/10.1016/j.actamat.2019.12.048 Publication ID: 74538
  • Adams, D.P. (2020). Basic Research of Intrinsic Tamper indication Markings and Patterns defined by Pulsed Laser Irradiation. https://doi.org/10.2172/1608082 Publication ID: 105756
  • Schuler, J.D., Copeland, R., Hattar, K., Rupert, T.J., Briggs, S.A., & Briggs, S.A. (2020). Solid-state dewetting instability in thermally-stable nanocrystalline binary alloys. Materialia, 9. https://doi.org/10.1016/j.mtla.2020.100618 Publication ID: 74531
  • Grosso, R.L., Muccillo, E.N.S., Muche, D.N.F., Jawaharram, G.S., Barr, C.M., Monterrosa, A.M., Castro, R.H.R., Hattar, K., Dillon, S.J., & Dillon, S.J. (2020). In Situ Transmission Electron Microscopy for Ultrahigh Temperature Mechanical Testing of ZrO2. Nano Letters, 20(2), pp. 1041-1046. https://doi.org/10.1021/acs.nanolett.9b04205 Publication ID: 73771
  • Heckman, N.M., Barr, C.M., Hattar, K., Adams, D.P., Furnish, T.A., Boyce, B.L., & Boyce, B.L. (2020). Watching high-cycle fatigue in nanocrystalline Pt and Pt-Au [Presentation]. https://www.osti.gov/biblio/1768173 Publication ID: 72804
  • Hattar, K. (2020). NSUF at Sandia National Laboratories [Conference Poster]. https://www.osti.gov/biblio/1768148 Publication ID: 72780
  • Clark, T., Hattar, K., Mathaudhu, S., Briggs, S., Dowding, R., Trelewciz, J., & Trelewciz, J. (2020). Irradiation induced damage evolution in Tungsten [Conference Poster]. https://www.osti.gov/biblio/1767395 Publication ID: 72729
  • Salvador, H., Sun, Y., Clark, T., Hattar, K., Shahrezaei, S., Mathaudhu, S.N., & Mathaudhu, S.N. (2020). Radiation tolerance of gradient grain-structured copper processed by surface mechanical attrition treatment [Conference Poster]. https://www.osti.gov/biblio/1767889 Publication ID: 72751
  • Agarwal, S., Jacobs-Gedrim, R.B., Bennett, C., Xiao, T.P., van Heukelom, M., Hughart, D.R., Fuller, E.J., Li, Y., Talin, A.A., Marinella, M., & Marinella, M. (2020). Designing and Modelling Analog Neural Network Training Accelerators [Presentation]. https://www.osti.gov/biblio/1764800 Publication ID: 72120
  • Saltonstall, C., McClure, Z., Abere, M.J., Guzman, D., Reeve, S., Strachan, A., Kotula, P.G., Adams, D.P., Bachman, W.B., & Bachman, W.B. (2020). Non-linear Thermal Resistance Trend with Increasing Bilayer Density [Conference Poster]. https://www.osti.gov/biblio/1766932 Publication ID: 72655
  • Barr, C.M., Price, P.M., Heckman, N.M., Boyce, B.L., Hattar, K., & Hattar, K. (2020). Exploring Stability of Nanocrystalline Metals with Competing Solute Effects Under High Temperature Irradiation [Conference Poster]. https://www.osti.gov/biblio/1767381 Publication ID: 72733
  • Scott, E., Hattar, K., Braun, J.L., Rost, C.M., Gaskins, J.T., Bai, T., Wang, Y., Ganski, C., Goorsky, M., Hopkins, P.E., & Hopkins, P.E. (2020). Orders of magnitude reduction in the thermal conductivity of polycrystalline diamond through carbon, nitrogen, and oxygen ion implantation. Carbon, 157, pp. 97-105. https://doi.org/10.1016/j.carbon.2019.09.076 Publication ID: 99752
  • Hattar, K. (2020). Exploring coupled extreme environments via in-situ transmission electron microscopy [Conference Poster]. Microscopy and Microanalysis. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85214056562&origin=inward Publication ID: 74206
  • Li, Q., Xue, S., Price, P.M., Sun, X., Ding, J., Shang, Z., Fan, Z., Wang, H., Zhang, Y., Chen, Y., Wang, H., Hattar, K., Zhang, X., & Zhang, X. (2019). Hierarchical nanotwins in single-crystal-like nickel with high strength and corrosion resistance produced via a hybrid technique. Nanoscale, 12(3), pp. 1356-1365. https://doi.org/10.1039/c9nr07472d Publication ID: 99424
  • Scott, E., Hattar, K., Braun, J., Rost, C., Gaskins, J., Bai, T., Wang, Y., Ganski, C., Fazli, M., Goorsky, M., Hopkins, P., & Hopkins, P. (2019). Thermal Property Manipulation Of Crytalline Materials through Ion Implantation [Conference Poster]. https://www.osti.gov/biblio/1643456 Publication ID: 66750
  • Kittell, D.E., Abere, M.J., Adams, D.P., & Adams, D.P. (2019). 3D Simulations of Reaction Front Dynamics in a 1:1 Co/Al Reactive Multilayer System [Conference Poster]. https://www.osti.gov/biblio/1643516 Publication ID: 66640
  • Jungjohann, K.L., Chisholm, C., Grudt, R.O., Aguiar, J.A., Mook, W.M., Kotula, P.G., Pilyugina, T.S., Bufford, D.C., Hattar, K., Kucharski, T.J., Taie, I.M., Ostraat, M.L., & Ostraat, M.L. (2019). Localized corrosion of low-carbon steel at the nanoscale. npj Materials Degradation, 3(1). https://doi.org/10.1038/s41529-019-0078-1 Publication ID: 67053
  • Dennett, C.A., Choens, R.C., Bachman, W.B., Heckman, N.M., Ingraham, M.D., Robinson, D.B., Boyce, B.L., Short, M.P., Hattar, K., & Hattar, K. (2019). Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques. JOM. Journal of the Minerals, Metals & Materials Society, 72(1), pp. 197-209. https://doi.org/10.1007/s11837-019-03898-7 Publication ID: 65957
  • Ziade, E., Bachman, W.B., Hattar, K., & Hattar, K. (2019). Tunable Thermal Transport across Interfaces via Phonon Engineering. https://doi.org/10.2172/1763287 Publication ID: 102892
  • Abere, M.J., Sobczak, C., Adams, D.P., & Adams, D.P. (2019). Prediction of spin band widths in Co/Al nanolaminates [Conference Poster]. https://www.osti.gov/biblio/1643625 Publication ID: 66448
  • Islam, Z., Paoletta, A.L., Monterrosa, A.M., Schuler, J.D., Rupert, T.J., Hattar, K., Glavin, N., Haque, A., & Haque, A. (2019). Heavy ion irradiation effects on GaN/AlGaN high electron mobility transistor failure at off-state. Microelectronics Reliability, 102. https://doi.org/10.1016/j.microrel.2019.113493 Publication ID: 99440
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June 22, 2023