Sally June Tracy

Carnegie Institution for Science

(202) 478-8955


Ph.D. Materials Science, California Institute of Technology 2016

M.S. Materials Science, California Institute of Technology 2011

B.A. Physics, Occidental College 2008


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


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).


Smithsonian Institution, Dept. of Mineral Sciences, January 2020

Geological Society of Washington, January 2020

Mineralogy Lecture Series, Johns Hopkins University, October 2019

Gordon Research Conference on X-Ray Science, August 2019

Neighborhood Lecture Series, Carnegie Institution for Science, May 2019

Mineralogy Lecture Series, Johns Hopkins University, October 2018

European Crystallographic Meeting, August 2018

Gordon Research at High Pressure Conference, July 2018

Carnegie Institute of Washington, Geophysical Laboratory Seminar, May 2018

UC, 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


American Geophysical Union

Mineralogical Society of America

American Physical Society