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Sally June Tracy
Carnegie Institution for Science
sjtracy@carnegiescience.edu
(202) 478-8955
EDUCATION
Ph.D. Materials Science, California Institute of Technology 2016
M.S. Materials Science, California Institute of Technology 2011
B.A. Physics, Occidental College 2008
APPOINTMENTS
Staff Scientist, Earth & Planets Laboratory, Carnegie Institution for Science 2019 – present
Postdoctoral Associate, Geosciences, Princeton University 2016 – 2018
Post-Baccalaureate, Materials Science, Los Alamos National Laboratory 2008 – 2009
PUBLICATIONS
S. Tagaki and S. J. Tracy, In Situ Observation of the Amorphization of Feldspars under Plate Impact Shock Compression, AIP Conf. Proc. 2066, 520001 (2024).
R. Dutta, S. J. Tracy, R. E. Cohen, High-pressure order-disorder transition in Mg2SiO4: Implications for super-Earth mineralogy, Phys. Rev. B , 107, 184112 (2023).
S. J. Tracy. Light-Source Diffraction Studies of Planetary Materials Under Dynamic Loading. In Static and Dynamic High Pressure Mineral Physics, Y. Fei and M. Walter (Eds.) pp. 93-112, Cambridge: Cambridge University Press (2022).
D. Kim, R. F. Smith, I. K. Ocampo, F. Coppari, M. C. Marshall, M. K. Ginnane, J. K. Wicks, S. J. Tracy, M. Millot, A Lazicki, J. R. Rygg, J. H. Eggert, T. S. Duffy, Structure and Density of Silicon Carbide to 1.5 TPa and Implications for Extrasolar Planets, Nat. Comm., 13, 2260 (2022).
R. Dutta, S. J. Tracy, R. E. Cohen, F. Miozzi, K. Luo, J. Yang, P. C. Burnley, D. Smith, Y. Meng, S. Chariton, V. B. Prakapenka, and T. S. Duffy, Ultra-high pressure disordered eight-coordinated phase of Mg2GeO4: Analogue for super- Earth mantles, PNAS, 112, e2114424119 (2022).
D. Kim, S. J. Tracy, R. F. Smith, A. E. Gleason, C. A. Bolme, V. B. Prakapenka, K. Appel, S. Speziale, J. K. Wicks, E. J. Berryman, S. K. Han, M. O. Schoelmerich, H. J. Lee, B. Nagler, E. F. Cunningham, M. C. Akin, P. D. Asimow, J. H. Eggert, and T. S. Duffy, Femtosecond X-ray Diffraction of Laser-shocked Forsterite (Mg2SiO4) to 122 GPa, J. Geophys. Res. 126, e2020JB020337 (2021).
B. Glam, S. J. Tracy, R. F. Smith, J. K. Wicks, D. E. Fratanduono, A. E. Gleason, C. A. Bolme, V. B. Prakapenka, S. Speziale, K. Appel, H. J. Lee, A. MacKinnon, F. Tavella, J. H. Eggert, T. S. Duffy, Structure of boron carbide under laser-based shock-compression at 51 GPa, AIP Conf. Proc. 2272:100010(1-6) (2020).
S. J. Tracy, S. J. Turneaure and T. S. Duffy, Structural response of alpha-quartz under plate-impact shock compression, Sci. Adv. 6, eabb3913 (2020).
M. G. Gorman, D. McGonegle, S. J. Tracy, S. M. Clarke, C. A. Bolme, A. E. Gleason, S. J. Ali, S. Hok, C. W. Greeff, P. G. Heighway, K. Hulpach, B. Glam, D. K. Kim, E. Galtier, H. J. Lee, J. S. Wark, J. H. Eggert, J. K. Wicks, R. F. Smith, Recovery of a high-pressure phase in zirconium formed under laser-driven compression, Phys. Rev. B 102, 024101 (2020).
M. Schölmerich, T. Tschentscher, B. Shrikant, C. Bolme, E. Cunningham, R. Farla, E. Galtier, A. Gleason, M. Harmand, Y. Inubushi, K. Katagiri, K. Miyanishi, B. Nagler, N. Ozaki, T. Preston, R. Redmer, R. Smith, T. Tobase, T. Togashi, S. J. Tracy, Y. Umeda, L. Wollenweber, T. Yabuuchi, U. Zastrau, K. Appel, Evidence of shock-compressed stishovite above 300 GPa, Sci. Rep. 10, 10197 (2020).
R. Briggs, F. Coppari, M. G. Gorman, R. F. Smith, S. J. Tracy, A. L. Coleman, A. Fernandez-Pañella, M. Millot, J. H. Eggert, and D. E. Fratanduono, Measurement of body-centered cubic gold and melting under shock compression, Phys. Rev. Lett 123, 045701 (2019).
S. J. Tracy, R. F. Smith, J. K. Wicks, D. Fratanduono, C. Bolme, A. Gleason, S. Speziale, K. Appel, V. Prakapenka, A. Fernandez Pañella, H. K. Lee, B. Nagler, A. McKinnon, F. Tavella, J. H. Eggert and T. S. Duffy, In situ observation of phase transition in silicon carbide under shock compression using pulsed x-ray diffraction, Phys. Rev. B 99, 214106 (2019).
S. J. Tracy, S. J. Turneaure and T. S. Duffy, In situ x-ray diffraction of shock compressed fused silica, Phys. Rev. Lett. 120, 135702 (2018).
R. Dutta, S. J. Tracy, C. V. Stan, V. B. Prakapenka, R. J. Cava and T. S. Duffy, Phase Stability of Iron Germanate, FeGeO3 to 127 GPa, Phys. Chem. Miner. 0342-1791 (2017).
L. Mauger, J. E. Herriman, O. Hellman, S. J. Tracy, M. S. Lucas, J. A. Muñoz, Yuming Xiao, Ji Li and B. Fultz, Phonons and elasticity of cementite through the Curie temperature, Phys. Rev. B 95, 024308 (2017).
F. C. Yang, J. A. Munoz, O. Hellman, L. Mauger, M. S. Lucas, S. J. Tracy, M. B. Stone, D. L. Abernathy, Yuming Xiao and B. Fultz, Thermally-driven electronic topological transition in FeTi, Phys. Rev. Lett. 117, 076402 (2016).
S. J. Tracy, L. Mauger, H. L. Smith, J. Herriman, H. J. Tan, Y. M. Xiao and B Fultz, Polaron mobility and disordering of the Na sublattice in NaxFePO4, Chem. Mater. 28, 3051 (2016).
S. J. Tracy, L. Mauger, H. J. Tan, J. A. Muñoz, Yuming Xiao, B. Fultz, Polaron-ion correlations in LixFePO4 studied by x-ray nuclear resonant forward scattering at elevated pressure and temperature. Phys. Rev. B 90, 094303 (2014).
L. Mauger, M. S. Lucas, J. A. Muñoz, S. J. Tracy, M. Kresch, Yuming Xiao, Paul Chow, and B. Fultz, Nonharmonic phonons in α-iron at high temperatures. Phys. Rev. B 90, 064303 (2014).
H. L. Smith, B. C. Hornbuckle, L. Mauger, B. Fu, S. J. Tracy, G. B. Thompson, M. S. Lucas, Yuming Xiao, M. Y. Hu, J. Zhao, E. E. Alp, B. Fultz, Changes in vibrational entropy during the early stages of chemical unmixing in fcc Cu–6% Fe. Acta Materialia 61, 7466–7472 (2013).
Chen W. Li, Xiaoli Tang, J. A. Muñoz, J. B. Keith, S. J. Tracy, D. L. Abernathy, and B. Fultz, Structural relationship between negative thermal expansion and quartic anharmonicity of cubic ScF3, Phys. Rev. Lett. 107, 195504 (2011).
G. M. Schmiedeshoff, E. D. Mun, A. W. Lounsbury, S. J. Tracy, E. C. Palm, S. T. Hannahs, J. H. Park, T. P. Murphy, S. L. Bud’ko, and P. C. Canfield, Multiple regions of quantum criticality in YbAgGe, Phys. Rev. B 83, 180408 (2011).
G. M. Schmiedeshoff, A. W. Lounsbury, D. J. Luna, E. W. Okraku, S. J. Tracy, S. L. Bud'ko, and P. C. Canfield, Thermal expansion of the heavy fermion borocarbide YbNi2B2C, J. Phys.: Conf. Ser. 150, 042177 (2009).
G. M. Schmiedeshoff, A. W. Lounsbury, D. J. Luna, S. J. Tracy, A. J. Schramm, S. W. Tozer, V. F. Correa, S. T. Hannahs, T. P. Murphy, E. C. Palm, A. H. Lacerda, S. L. Bud'ko, P. C. Canfield, J. L. Smith, J. C. Lashley, and J. C. Cooley, Versatile and compact capacitive dilatometer, Rev. Sci. Instrum. 77, 123907 (2006).
INVITED LECTURES
Arizona State University, Force Seminar, March 2023 (virtual)
APS March Meeting, March 2023
University of Maryland, Dept. of Geology Colloquium, November 2022
Los Alamos National Laboratory, Physics & Theoretical Division Colloquium, April 2022 (virtual)
Lawrence Livermore National Laboratory, High Energy Density Science Seminar, February 2022 (virtual)
Caltech, Dept. of Materials Science and Applied Physics, November 2021
Stanford, Dept. of Geological Sciences, May 2021 (virtual)
University of South Florida, Dept. of Physics Colloquium, March 2021 (virtual)
Smithsonian Institution, Dept. of Mineral Sciences, January 2020
Geological Society of Washington, January 2020
Johns Hopkins University, Mineralogy Lecture Series, October 2019
Gordon Research Conference on X-Ray Science, August 2019
Carnegie Institution for Science, Neighborhood Lecture Series, May 2019
Johns Hopkins University, Mineralogy Lecture Series, October 2018
European Crystallographic Meeting, August 2018
Gordon Research at High Pressure Conference, July 2018
Carnegie Institute of Washington, Geophysical Laboratory Seminar, May 2018
University of California, Berkeley, Dept. of Materials Science and Engineering, February 2018
Lawrence Livermore National Laboratory, Shock Physics Group, October 2017
APS Conference on Shock Compression of Condensed Matter, July 2017
Princeton University, Dept. of Geoscience Solid Earth Seminar, April 2017
The Minerals, Metals & Materials Society Annual Meeting, February 2016
EXTERNAL SERVICE
AGU Mineral and Rock Physics Section Secretary 2021-2024
APS SCCM Proceedings Editor 2023 - present
AGU Fall meeting session convener 2019, 2020, 2021
APS March Meeting session convener 2021, 2023
MEMBERSHIPS
American Geophysical Union
American Physical Society
Mineralogical Society of America
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