High-pressure phase above 40 GPa in ferroelectric KNbO3

被引：25

作者：

Kobayashi, Y ^{[1
]}

Endo, S

Ashida, T

Ming, LC

Kikegawa, T

机构：

[1] Osaka Univ, Res Ctr Mat Sci Extreme Condit, Toyonaka, Osaka 5608531, Japan

[2] Kinki Univ, Dept Chem & Environm Technol, Higashihiroshima, Hiroshima 7292115, Japan

[3] Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA

[4] High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.61.5819

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A ferroelectric KNbO3 of the barium titanate family has been investigated to 69 GPa at room temperature by angle-dispersive powder diffraction using synchrotron radiation and an imaging plate. A phase transition was observed to take place at around 40 GPa, and the Rietveld analysis showed that the high-pressure phase has GdFeO3-type orthorhombic structure, which is also one of the distorted perovskite structures.

引用

页码：5819 / 5822

页数：4

共 11 条

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