Weak ferromagnetic ordering in Ca doped polycrystalline BiFeO3

被引：62

作者：

Ramachandran, B. ^{[1
,2
]}

Dixit, A. ^{[3
]}

Naik, R. ^{[3
]}

Lawes, G. ^{[3
]}

Rao, M. S. Ramachandra ^{[1
,2
]}

机构：

[1] Indian Inst Technol, Dept Phys, Nano Funct Mat Technol Ctr, Madras 600036, Tamil Nadu, India

[2] Indian Inst Technol, Mat Sci Res Ctr, Madras 600036, Tamil Nadu, India

[3] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 02期

基金：

美国国家科学基金会;

关键词：

THIN-FILMS; FERROELECTRICITY; MULTIFERROICS; CONDUCTION; CERAMICS;

D O I：

10.1063/1.3678449

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Structural and magnetic properties of polycrystalline BiFeO3, Bi0.9Ca0.1FeO2.95, Bi0.9Ba0.05Ca0.05 FeO2.95, and Bi0.9Ba0.1FeO2.95 ceramic samples were studied to establish the effects of doping in BiFeO3 on the magnetic property. X-ray diffraction data of the undoped and doped BiFeO3 samples were refined to a rhombohedral structure with space group R3c. X-ray photoelectron spectroscopy study showed the formation of a single-phase in both the undoped and doped BiFeO3 ceramics with Fe in the 3+valence state. Ca doped and Ba-Ca co-doped BiFeO3 ceramic samples show weak ferromagnetic ordering at room temperature. This observation makes Ca doped and Ba-Ca co-doped BiFeO3 samples an interesting material system for magnetoelectric coupling studies. (C) 2012 American Institute of Physics. [doi:10.1063/1.3678449]

引用

页数：5

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