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DOE OSTI · 2507377

Shock-driven amorphization and melting in Fe 2 O 3

Crépisson, Céline [University of Oxford (United Kingdom)]·Amouretti, Alexis [Sorbonne Université, Paris (France); Osaka University (Japan)] (ORCID:000000018114613X)·Harmand, Marion [Sorbonne Université, Paris (France); HESAM University, Paris (France)] (ORCID:0000000307135824)·Sanloup, Chrystèle [Sorbonne Université, Paris (France)]·Heighway, Patrick [University of Oxford (United Kingdom)] (ORCID:0000000162210650)·Azadi, Sam [University of Oxford (United Kingdom)] (ORCID:0000000210404645)·McGonegle, David [AWE, Reading (United Kingdom)] (ORCID:0000000153291081)·Campbell, Thomas [University of Oxford (United Kingdom)]·Pintor, Juan [Sorbonne Université, Paris (France)] (ORCID:0000000242430282)·Chin, David Alexander [University of Rochester, NY (United States)] (ORCID:0000000301187690)·Smith, Ethan [University of Rochester, NY (United States)] (ORCID:0009000992825125)·Hansen, Linda [University of Rochester, NY (United States)] (ORCID:0000000342215993)·Forte, Alessandro [University of Oxford (United Kingdom)] (ORCID:0000000228727223)·Gawne, Thomas [University of Oxford (United Kingdom)] (ORCID:0000000199983606)·Lee, Hae Ja [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)]·Nagler, Bob [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0009000257367842)·Shi, YuanFeng [University of Oxford (United Kingdom)] (ORCID:0000000277232331)·Fiquet, Guillaume [Sorbonne Université, Paris (France)]·Guyot, François [Sorbonne Université, Paris (France)] (ORCID:0000000346222218)·Makita, Mikako [European XFEL, Schenefeld (Germany)]·Benuzzi-Mounaix, Alessandra [École Polytechnique, Palaiseau (France)]·Vinci, Tommaso [École Polytechnique, Palaiseau (France)] (ORCID:0000000215951752)·Miyanishi, Kohei [RIKEN SPring-8 Center, Hyogo (Japan)]·Ozaki, Norimasa [Osaka University (Japan)] (ORCID:0000000273209871)·Pikuz, Tatiana [Osaka University (Japan)] (ORCID:0000000259719250)·Nakamura, Hirotaka [Osaka University (Japan)]·Sueda, Keiichi [RIKEN SPring-8 Center, Hyogo (Japan)]·Yabuuchi, Toshinori [RIKEN SPring-8 Center, Hyogo (Japan); Japan Synchrotron Radiation Research Institute, Hyogo (Japan)] (ORCID:0000000306387640)·Yabashi, Makina [RIKEN SPring-8 Center, Hyogo (Japan); Japan Synchrotron Radiation Research Institute, Hyogo (Japan)] (ORCID:0000000224721684)·Wark, Justin S. [University of Oxford (United Kingdom)] (ORCID:0000000330553223)·Polsin, Danae N. [University of Rochester, NY (United States)] (ORCID:0000000195295056)·Vinko, Sam M. [University of Oxford (United Kingdom); STFC Rutherford Appleton Laboratory, Didcot (United Kingdom)] (ORCID:0000000310160975)
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Abstract

We present measurements on Fe 2⁢ O 3 amorphization and melt under laser-driven shock compression up to 209(10) GPa via time-resolved in situ x-ray diffraction. At 122(3) GPa, a diffuse signal is observed indicating the presence of a noncrystalline phase. Structure factors have been extracted up to 182(6) GPa showing the presence of two well-defined peaks. A rapid change in the intensity ratio of the two peaks is identified between 145(12) and 151(12) GPa, indicative of a phase change. The noncrystalline diffuse scattering is consistent with shock amorphization of Fe 2 ⁢O 3 between 122(3) and 145(12) GPa, followed by an amorphous-to-liquid transition above 151(12) GPa. Upon release, a noncrystalline phase is observed alongside crystalline α–Fe 2⁢ O 3 . The extracted structure factor and pair distribution function of this release phase resemble those reported for Fe 2 ⁢O 3 melt at ambient pressure.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYAmorphous materialsLiquidsPhase transitionsShock wavesX-ray diffraction

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Crépisson, Céline [University of Oxford (United Kingdom)], Amouretti, Alexis [Sorbonne Université, Paris (France); Osaka University (Japan)] (ORCID:000000018114613X), Harmand, Marion [Sorbonne Université, Paris (France); HESAM University, Paris (France)] (ORCID:0000000307135824), Sanloup, Chrystèle [Sorbonne Université, Paris (France)], Heighway, Patrick [University of Oxford (United Kingdom)] (ORCID:0000000162210650), Azadi, Sam [University of Oxford (United Kingdom)] (ORCID:0000000210404645), McGonegle, David [AWE, Reading (United Kingdom)] (ORCID:0000000153291081), Campbell, Thomas [University of Oxford (United Kingdom)], Pintor, Juan [Sorbonne Université, Paris (France)] (ORCID:0000000242430282), Chin, David Alexander [University of Rochester, NY (United States)] (ORCID:0000000301187690), Smith, Ethan [University of Rochester, NY (United States)] (ORCID:0009000992825125), Hansen, Linda [University of Rochester, NY (United States)] (ORCID:0000000342215993), Forte, Alessandro [University of Oxford (United Kingdom)] (ORCID:0000000228727223), Gawne, Thomas [University of Oxford (United Kingdom)] (ORCID:0000000199983606), Lee, Hae Ja [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Nagler, Bob [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)] (ORCID:0009000257367842), Shi, YuanFeng [University of Oxford (United Kingdom)] (ORCID:0000000277232331), Fiquet, Guillaume [Sorbonne Université, Paris (France)], Guyot, François [Sorbonne Université, Paris (France)] (ORCID:0000000346222218), Makita, Mikako [European XFEL, Schenefeld (Germany)], Benuzzi-Mounaix, Alessandra [École Polytechnique, Palaiseau (France)], Vinci, Tommaso [École Polytechnique, Palaiseau (France)] (ORCID:0000000215951752), Miyanishi, Kohei [RIKEN SPring-8 Center, Hyogo (Japan)], Ozaki, Norimasa [Osaka University (Japan)] (ORCID:0000000273209871), Pikuz, Tatiana [Osaka University (Japan)] (ORCID:0000000259719250), Nakamura, Hirotaka [Osaka University (Japan)], Sueda, Keiichi [RIKEN SPring-8 Center, Hyogo (Japan)], Yabuuchi, Toshinori [RIKEN SPring-8 Center, Hyogo (Japan); Japan Synchrotron Radiation Research Institute, Hyogo (Japan)] (ORCID:0000000306387640), Yabashi, Makina [RIKEN SPring-8 Center, Hyogo (Japan); Japan Synchrotron Radiation Research Institute, Hyogo (Japan)] (ORCID:0000000224721684), Wark, Justin S. [University of Oxford (United Kingdom)] (ORCID:0000000330553223), Polsin, Danae N. [University of Rochester, NY (United States)] (ORCID:0000000195295056), Vinko, Sam M. [University of Oxford (United Kingdom); STFC Rutherford Appleton Laboratory, Didcot (United Kingdom)] (ORCID:0000000310160975). 2025-01-29. Shock-driven amorphization and melting in Fe 2 O 3. https://doi.org/10.1103/physrevb.111.024209

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