Structural and magnetic properties in Bi1-xRxFeO3 (x=0-1, R=La, Nd, Sm, Eu and Tb) polycrystalline ceramics

被引：122

作者：

Zhang, Yu-jie ^{[1
,2
,3
]}

Zhang, Hong-guo ^{[1
,2
]}

Yin, Jin-hua ^{[1
,2
,4
]}

Zhang, Hong-wei ^{[1
,2
]}

Chen, Jing-lan ^{[1
,2
]}

Wang, Wen-quan ^{[3
]}

Wu, Guang-heng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Condensed Mater Phys, Beijing 100190, Peoples R China

[3] Jilin Univ, Dept Phys, Changchun 130023, Peoples R China

[4] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 15期

关键词：

Bi1-xRxFeO3; Magnetization coercivity; ZFC; FC; CRYSTAL-STRUCTURE; ROOM-TEMPERATURE; BIFEO3; CERAMICS; SUBSTITUTION; POLARIZATION; ANISOTROPY; TRANSITION; CO;

D O I：

10.1016/j.jmmm.2010.02.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of rare-earth doped BiFeO3 samples, Bi1-xRxFeO3 (x=0-1, R=La, Nd, Sm, Eu and Tb), were prepared in this work. X-ray diffraction analysis showed that the structure of rare-earth doped BiFeO3 was transformed from rhombohedral lattice to orthorhombic one by increasing x. The lattice constants and unit-cell volume decreased with the increasing of the doping content, while both the Neel temperature and magnetization were enhanced. A magnetic phase transition was observed at about 35 K for BiFeO3. The variation of the magnetization with temperature depended on applied field strength and magnetizing history, which was explained according to the antiferromagnetic exchange interaction between Fe and R sites in Bi1-xRxFeO3(x>0). The magnetocrystalline anisotropy contributed by Fe sublattice gave rise to a large coercivity in BixNd1-xFeO3 with an orthorhombic structure. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2251 / 2255

页数：5

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