HIGH-PRESSURE AND HIGH-TEMPERATURE XAFS STUDY OF GERMANATE - FOURFOLD VERSUS SIXFOLD COORDINATION CHANGES

被引：8

作者：

ANDRAULT, D ^{[1
]}

PERYRONNEAU, J ^{[1
]}

FARGES, F ^{[1
]}

ITIE, JP ^{[1
]}

机构：

[1] UNIV PARIS 06, LPMC, F-75252 PARIS, FRANCE

来源：

PHYSICA B | 1995年 / 208卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(94)00689-S

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The Ge coordination changes in oxides have been investigated by XAFS at high pressure and high temperature using the energy dispersive configuration of the DCI storage ring of LURE (Orsay, France). Two different experimental set-up were used to investigate both tetrahedra-to-octahedra (high pressure and temperature) and octahedra-to-tetrahedra (high temperature) changes. The network compression and dilatation are found to be precursor of phase transformations occuring under these extreme conditions.

引用

页码：327 / 329

页数：3

共 5 条

[1] COMPRESSION AND COORDINATION CHANGES IN PYROXENOIDS - AN EXAFS STUDY OF MGGEO3 ENSTATITE AND CAGEO3 WOLLASTONITE [J].