KI高达150GPa的状态方程

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

High Pressure Research Pub Date : 2023-07-03 DOI:10.1080/08957959.2023.2233680

Robin Fréville, A. Dewaele, N. Guignot, G. Garbarino, M. Mezouar

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引用次数: 0

摘要

摘要在金刚石砧室中，用角色散X射线衍射法测定了298K下碘化钾的状态方程KI，最高可达156GPa。氦压力传输介质用于最小化样品上的非静水应力。B2相至少在2和156GPa之间是稳定的。使用Rydberg–Vinet状态方程拟合压力-体积数据。B2-KI在环境压力下的体积、等温体积模量及其压力导数分别为，GPa和。它允许在高压实验中使用KI作为压力校准器。

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Equation of state of KI up to 150 GPa

ABSTRACT The equation of state of potassium iodide, KI, has been determined up to 156 GPa at 298 K by angular-dispersive X-ray diffraction in diamond-anvil-cell. Helium pressure transmitting medium was used to minimize non-hydrostatic stress on the sample. The B2 phase is stable at least between 2 and 156 GPa. Pressure–volume data were fitted using a Rydberg–Vinet equation of state. The volume, isothermal bulk modulus and its pressure derivative of B2-KI at ambient pressure are , GPa and . It allows using KI as a pressure calibrant in high pressure experiments.

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来源期刊

High Pressure Research 物理-物理：综合

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

2 months

期刊介绍： High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as: condensed matter physics and chemistry geophysics and planetary physics synthesis of new materials chemical kinetics under high pressure industrial applications shockwaves in condensed matter instrumentation and techniques the application of pressure to food / biomaterials Theoretical papers of exceptionally high quality are also accepted.