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.

中文翻译：

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在兆巴范围内压缩 CsCl 和 CsBr

摘要 氯化铯和溴化铯的准流体静压压缩已通过 X 射线衍射在 300 K 下高达 141 GPa 进行测量。立方到正交的转变，晶格参数畸变≥10%，在 CsBr 中得到证明，大约为 60 GPa。在相同压力下，CsCl 中出现较小的变形（~1.5%），随后可能过渡到较低的对称相，从 134 GPa 开始。PV 压缩曲线产生的状态参数方程与其他 B2 碱金属卤化物的状态参数方程一致。