Pressure-induced phase transitions in solids: BaF2

被引:39
作者
Samara, G. A. [1 ]
机构
[1] Sandia Natl Labs, Albuquerque, NM 87115 USA
来源
PHYSICAL REVIEW B-SOLID STATE | 1970年 / 2卷 / 10期
关键词
D O I
10.1103/PhysRevB.2.4194
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Similarities between the pressure dependences of the elastic constants of BaF2 and RbI suggested that a pressure-induced phase transition should obtain in BaF2. This transition has been observed. With increasing pressure at 295 degrees K the transition occurs at 26.8 kbar. The transition pressure decreases with increasing temperature, and at sufficiently high pressure the transition can be induced by raising the temperature. The possible lattice dynamical nature of the transitions in RbI and BaF2 is discussed.
引用
收藏
页码:4194 / 4198
页数:5
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