CsCl和CsBr在兆巴范围内的压缩

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

High Pressure Research Pub Date : 2020-06-03 DOI:10.1080/08957959.2020.1774754

A. Dewaele

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引用次数: 2

摘要

摘要用X射线衍射测量了氯化铯和溴化铯的准流体静力压缩，压缩系数高达141 300时的GPa K.CsBr在60左右证明了晶格参数畸变≥10%的立方向正交转变 GPa。在相同压力下，CsCl中出现较小的畸变（～1.5%），随后可能从134开始过渡到较低的对称相 GPa。P−V压缩曲线产生的状态方程参数与其他B2碱金属卤化物的状态方程一致。

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Compression of CsCl and CsBr in the megabar range

ABSTRACT The quasi-hydrostatic compression of cesium chloride and cesium bromide has been measured with X-ray diffraction up to 141 GPa at 300 K. A cubic to orthorhombic transition, with a ≥10% distortion of lattice parameters, is evidenced in CsBr around 60 GPa. A smaller distortion (∼1.5%) appears in CsCl at the same pressure, followed by a likely transition to a lower symmetry phase which starts at 134 GPa. P−V compression curves yield equation of state parameters in line with those of other B2 alkali halides.

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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.