In situ pressure-induced solid-state amorphization in Sm2(MoO4)3, Eu2(MoO4)3 and Gd2(MoO4)3 crystals:: chemical decomposition scenario

被引：66

作者：

Dmitriev, V

Sinitsyn, V

Dilanian, R

Machon, D

Kuznetsov, A

Ponyatovsky, E

Lucazeau, G

Weber, HP

机构：

[1] Swiss Norwegian Beam Lines ESRF, Grp Struct Mat Extreme Condit, F-38043 Grenoble, France

[2] Ecole Natl Super Electrochim & Electrome Grenoble, LEPMI, F-38402 St Martin Dheres, France

[3] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[4] Univ Lausanne, Inst Crystallog, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2003年 / 64卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

disordered systems; X-ray diffraction; phase transitions; high pressure;

D O I：

10.1016/S0022-3697(02)00302-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of pressure on the phase transformations in Sm-2(MoO4)(3), Gd-2(MoO4)(3) and Eu-2(MoO4)(3) crystals has been studied in situ using synchrotron radiation. All three isostructural compounds undergo a structural phase transition at 2.2-2.8 GPa to a new phase, which is interpreted as a possible precursor of amorphization. Amorphization in these crystals occurs irreversibly over a wide pressure range, and its mechanism, interpreted as a chemical decomposition, is found to be weakly affected by the degree of hydrostaticity. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：307 / 312

页数：6