Energy dispersive X-ray diffraction study of KNbO3 up to 19 GPa at room temperature

被引：30

作者：

Chervin, JC ^{[1
]}

Itié, JP ^{[1
]}

Gourdain, D ^{[1
]}

Pruzan, P ^{[1
]}

机构：

[1] Univ Paris 06, F-75252 Paris 05, France

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 110卷 / 05期

关键词：

crystal structure; phase transitions;

D O I：

10.1016/S0038-1098(99)00073-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Energy dispersive X-ray diffraction was used at room temperature to investigate the phase diagram of the KNbO3 perovskite up to 19 GPa. The results confirm the location of the ferroelectric-paraelectric transition at similar to 9 GPa and support the transformation of the orthorhombic solid to the tetragonal solid in the 4-5 GPa pressure range. The variation of the cell volume was fitted to a Murnaghan equation of state whose parameters are discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：247 / 251

页数：5

共 13 条

[1] A DIAMOND-ANVIL CELL FOR IR MICROSPECTROSCOPY [J].