Shock-driven amorphization and melting in Fe2O3

IF 3.7 2区物理与天体物理 Q1 Physics and Astronomy Physical Review B Pub Date : 2025-01-29 DOI:10.1103/physrevb.111.024209

Céline Crépisson, Alexis Amouretti, Marion Harmand, Chrystèle Sanloup, Patrick Heighway, Sam Azadi, David McGonegle, Thomas Campbell, Juan Pintor, David Alexander Chin, Ethan Smith, Linda Hansen, Alessandro Forte, Thomas Gawne, Hae Ja Lee, Bob Nagler, YuanFeng Shi, Guillaume Fiquet, François Guyot, Mikako Makita, Alessandra Benuzzi-Mounaix, Tommaso Vinci, Kohei Miyanishi, Norimasa Ozaki, Tatiana Pikuz, Hirotaka Nakamura, Keiichi Sueda, Toshinori Yabuuchi, Makina Yabashi, Justin S. Wark, Danae N. Polsin, Sam M. Vinko

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Abstract

We present measurements on Fe2O3 amorphization and melt under laser-driven shock compression up to 209(10) GPa via time-resolved 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 Fe2O3 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−Fe2O3. The extracted structure factor and pair distribution function of this release phase resemble those reported for Fe2O3 melt at ambient pressure.

Published by the American Physical Society

2025

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冲击驱动Fe2O3中的非晶化和熔化

我们通过时间分辨x射线衍射测量了Fe2O3在高达209(10)GPa的激光驱动激波压缩下的非晶化和熔化。在122(3)GPa时，观察到弥漫性信号，表明存在非晶相。在182(6)GPa下提取了结构因子，显示存在两个明确的峰。两个峰的强度比在145（12）和151(12)GPa之间快速变化，表明相变。在122(3)~ 145(12)GPa之间，Fe2O3的非晶扩散散射与激波非晶化一致，在151(12)GPa以上，Fe2O3的非晶向液态转变。释放后，在α−Fe2O3晶体旁边观察到非晶相。该释放相的结构因子和对分布函数与报道的常压Fe2O3熔体相似。2025年由美国物理学会出版

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来源期刊

Physical Review B 物理-物理：凝聚态物理

CiteScore

6.70

自引率

32.40%

发文量

审稿时长

3.0 months

期刊介绍： Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide. PRB covers the full range of condensed matter, materials physics, and related subfields, including: -Structure and phase transitions -Ferroelectrics and multiferroics -Disordered systems and alloys -Magnetism -Superconductivity -Electronic structure, photonics, and metamaterials -Semiconductors and mesoscopic systems -Surfaces, nanoscience, and two-dimensional materials -Topological states of matter