A high pressure Raman study of calcium molybdate
A high pressure Raman study of calcium molybdate
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DOI：
10.1016/0022-3697(95)00034-8
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发表时间：
1995-08
影响因子：
4
通讯作者：
D. Christofilos;G. Kourouklis;S. Ves
中科院分区：
文献类型：
--
作者：
D. Christofilos;G. Kourouklis;S. Ves
在这项工作中，我们提出了一个拉曼研究的CaMoO4作为一个功能的静水压力软化的白钨矿结构，而在高压阶段，其斜率变为正值。MoO2− 4族的v1v3伸缩模在两个相变中都表现出压力依赖性的剧烈变化。这种行为与高压相中Mo离子配位数的增加有关。这些特点进行了比较，与其他的钨酸盐和钨酸盐的高压行为。
In this work we present a Raman study of CaMoO4as a function of hydrostatic pressure up softening in the scheelite structure, while in the high pressure phases its slope becomes positive. The v1v3stretching modes of the MoO2−4group exhibit drastic changes in their pressure dependencies at both phase transitions. This behavior is connected with the increase in the coordination number of the Mo ion in the high pressure phases. These characteristics are compared with the high pressure behavior of other molybdates and tungstates.