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.
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收藏
页码：247 / 251
页数：5
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