Enhancement of magnetization and dielectric properties of chromium-doped BiFeO3 with tunable morphologies

被引：30

作者：

Du, Yi ^{[1
]}

Cheng, Zhen Xiang ^{[1
]}

Dou, Shi Xue ^{[1
]}

Shahbazi, Mahboobeh ^{[1
]}

Wang, Xiao Lin ^{[1
]}

机构：

[1] Univ Wollongong, ISEM, Fairy Meadow, NSW 2519, Australia

来源：

THIN SOLID FILMS | 2010年 / 518卷 / 24期

基金：

澳大利亚研究理事会;

关键词：

Bismuth ferrite; Chromium doping; Dielectric; Magnetic; Tunable morphology; ELECTRICAL-PROPERTIES;

D O I：

10.1016/j.tsf.2010.03.118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multiferroic BiFe1-xCrxO3 (x = 0.025, 0.05, 0.075, and 0.1) is prepared by the hydrothermal method. Samples are systematically characterized by X-ray diffraction, Rietveld refinement, SEM, dielectric and magnetic measurements. It is found that the lattice parameters, the morphology and the size of the obtained particles strongly depend on the Cr doping level. The lattice parameters a and c and the Fe-O (1) bond lengths decrease, while the Fe-O (2) bond lengths increase, as x values rise from 0.025 to 0.1. The particle morphology changes from spherical shape for pure BiFeO3 to octahedral shape for x = 0.1. The dielectric constant and the magnetization increase greatly with the increase of the Cr doping level. Both the M-T and the M-H results reveal that the Cr doping enhances the ferromagnetic state in the doped BiFeO3. The possible reasons for the enhanced magnetic and dielectric properties are discussed briefly. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：E5 / E8

页数：4

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