Dielectric and magnetic properties of BiFeO3 ceramics prepared by hydrothermal synthesis

被引：25

作者：

Kim, A. Y. ^{[2
]}

Han, S. H. ^{[3
]}

Kang, H-W. ^{[3
]}

Lee, H-G. ^{[3
]}

Kim, J. S. ^{[2
]}

Cheon, C. I. ^{[1
,2
]}

机构：

[1] Hoseo Univ, Dept Mat Sci & Engn, Asan 336795, Chungnam, South Korea

[2] Hoseo Univ, Dept Semicond & Display Engn, Asan 336795, Chungnam, South Korea

[3] Korea Elect Technol Inst, Elect Mat & Device Res Ctr, Songnam 463816, Kyeonggi, South Korea

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷

关键词：

Powders: chemical preparation; Sintering; Dielectric properies; Magnetic properties; MULTIFERROIC BIFEO3; BISMUTH FERRITE; TEMPERATURE; POLARIZATION;

D O I：

10.1016/j.ceramint.2011.05.019

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single-phase BiFeO3 powders were prepared at a temperature of 200 degrees C by a hydrothermal synthesis. BiFeO3 ceramics were prepared with the powders by a conventional ceramic process. The BiFeO3 ceramics with no impurity phase were prepared at the sintering temperature of 650-800 degrees C. The dense microstructure was observed in the BiFeO3 ceramics sintered at a temperature of 700 degrees C and higher. BiFeO3 ceramics show linear M H curves in low H, which are antiferromagnetic behaviors. The dielectric dispersion was observed at the frequency range of 10 kHz to 1 MHz in the BiFeO3 ceramic sintered at 700 degrees C or lower. The dielectric constant and loss of the BiFeO3 ceramics sintered at 750 degrees C or higher were about 85 and 0.4 at 100 kHz, respectively. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：S397 / S401

页数：5

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