X-ray diffraction study of pressure-induced amorphization in Lu2(WO4)3

被引：33
|
作者：
Liu, H
Secco, RA
Imanaka, N
Adachi, G
机构：
[1] Univ Western Ontario, Dept Earth Sci, London, ON N6A 5B7, Canada
[2] Osaka Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan
来源：
SOLID STATE COMMUNICATIONS | 2002年 / 121卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
crystal structure; other-pressure-induced amorphization; high pressure;
D O I：
10.1016/S0038-1098(01)00458-6
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The effect of pressure on the crystal structure of Lu-2(WO4)(3) has been studied up to 8.0 GPa using X-ray powder diffraction. The recovered samples showed that the diffracted intensity decreases as the pressure increases. The first evidence of amorphization occurs at similar to5.0 GPa and total amorphization is completed at 8.0 GPa. The bending of Lu-O-W bonds and the tilting of polyhedra in the framework structure are suggested as the mechanism of amorphization. The correlation of pressure-induced amorphization in materials that have a negative thermal expansion coefficient us further supported by structural and thermal expansion behavior in Lu-2(WO4)(3). (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：177 / 180
页数：4
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