Local structures in high pressure phases of V2O5

被引：39

作者：

Grzechnik, A ^{[1
]}

机构：

[1] Ecole Normale Super Lyon, F-69364 Lyon 07, France

来源：

CHEMISTRY OF MATERIALS | 1998年 / 10卷 / 09期

关键词：

D O I：

10.1021/cm980245z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The high-pressure behavior of layered V2O5 is investigated using in situ Raman spectroscopy in a diamond anvil cell. Upon compression, the mode associated with the vanadyl V = O double bond at 997 cm(-1) softens and vanishes at about 10 GPa. Above 7 GPa, additional modes appear in the V-O stretching region, at lower wavenumbers than the V = O stretching oscillation. Such a behavior is interpreted as a pressure-induced five-to-six coordination change around the V5+ cations, leading to a three-dimensional V2O5 lattice. Upon decompression, intermediate phases are recovered.

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页码：2505 / 2509

页数：5

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