Charge ordering and dielectric dispersion in mixed valence oxides RFe2O4

被引：15

作者：

Ikeda, N ^{[1
]}

Mori, S

Kohn, K

机构：

[1] Japan Synchrotron Radiat Res Inst, Mikazuki, Hyogo 6795198, Japan

[2] Osaka Prefecture Univ, Dept Mat Sci, CIAS, Sakai, Osaka 5998531, Japan

[3] Waseda Univ, Adv Res Ctr, Shinjuku Ku, Tokyo 1698555, Japan

来源：

FERROELECTRICS | 2005年 / 314卷

关键词：

charge frustration; charge ordering; triangular lattice; RFe2O4; dielectric dispersion; spontaneous polarization; Verwey transition; frustrated system;

D O I：

10.1080/00150190590926085

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In a series of oxides RFe2O4 (R = rare earth between Dy and Lu, or Y), equal numbers of Fe2+ and Fe3+ are located on a layer composed of two triangular nets stacked together. These oxides have several phase transitions where the arrangement of Fe2+ and Fe3+ ions transforms from one type to another. Unique dielectric properties of these oxides have been explained in connection with the charge ordering. Recent developments on the structure of the ordered phases are reviewed with comments on their correlation with the observed dielectric dispersion.

引用

页码：41 / 56

页数：16

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