Improved ferroelectricity and ferromagnetism of Eu-modified BiFeO3-BaTiO3 lead-free multiferroic ceramics

被引：25

作者：

Tian, Mijie ^{[1
]}

Zhou, Lin ^{[1
]}

Zou, Xiao ^{[1
]}

Zheng, Qiaoji ^{[1
]}

Luo, Lingling ^{[1
]}

Jiang, Na ^{[1
]}

Lin, Dunmin ^{[1
]}

机构：

[1] Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610066, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2015年 / 26卷 / 11期

关键词：

BIFEO3; THIN-FILMS; PIEZOELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; SUBSTITUTED BIFEO3; RAMAN-SCATTERING; SOLID-SOLUTIONS; GRAIN-SIZE; MICROSTRUCTURE; TEMPERATURE; TRANSITION;

D O I：

10.1007/s10854-015-3564-4

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multiferroic ceramics of 0.75Bi(1-x) Eu (x) FeO3-0.25BaTiO(3) + 1 mol% MnO2 were synthesized by a conventional solid state reaction method and the effects of Eu doping on microstructure, ferroelectric, ferromagnetic and piezoelectric properties of the ceramics were investigated. All the ceramics exhibit a pure perovskite structure without any secondary phases. After the addition of Eu3+ ions, the crystal structure of the ceramics is transformed from rhombohedral to tetragonal phase at x = 0.025. The ferroelectricity and ferromagnetism of the ceramics are improved. For the ceramic with x = 0.025, the optimum remanent polarization of 18.3 mu C/cm(2) and good piezoelectricity of 82 pC/N are obtained. The saturated magnetization M (s) and remanent magnetism M (r) of the ceramics are improved by 165 and 141 % with x increasing from 0 to 0.175, respectively.

引用

页码：8840 / 8847

页数：8

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