Publication Date:
2018-08-10
Description:
Author(s): Yongtao Zou, Wei Zhang, Ting Chen, Xing-ao Li, Chun-Hai Wang, Xintong Qi, Shanmin Wang, Tony Yu, Bingbing Liu, Yanbin Wang, Robert C. Liebermann, Yusheng Zhao, and Baosheng Li Understanding the crystal structure, phase stability, and elasticity of magnetite (Fe 3 O 4 ) at high pressure and temperature will explain the behavior of the Fe-O system deep within the Earth, and promote applications and engineering of Fe-O under extreme conditions. Using ultrasonic interferometry plus i n s i t u x-ray techniques, the authors discover a temperature-driven anomaly in magnetite’s shear behavior and a pressure-induced softening of its shear modulus, due to local atomic distortions and charge ordering of Fe cations at the octahedral sites in the inverse-spinel structure. This work will interest researchers in physics, chemistry, materials science, and geoscience. [Phys. Rev. Applied 10, 024009] Published Thu Aug 09, 2018
Electronic ISSN:
2331-7019
Topics:
Physics
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