Possible misleading interpretations on magnetic and transport properties in BiFeO3 nanoparticles caused by impurity phase

被引：18

作者：

Ramirez, Fabian E. N. ^{[1
]}

Pasca, Gabriel A. C. ^{[1
]}

Souza, Jose A. ^{[1
]}

机构：

[1] Univ Fed ABC, BR-09090400 Santo Andre, SP, Brazil

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 24-25期

基金：

巴西圣保罗研究基金会;

关键词：

Multiferroic nanoparticles; Magnetic properties; Electrical polarization; Impurity phase; TEMPERATURE; FERROELECTRICITY; MULTIFERROICS; CONDUCTION; BEHAVIOR;

D O I：

10.1016/j.physleta.2015.03.035

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

BiFeO3 nanoparticles were synthesized by a wet chemical method. X-ray powder diffraction indicated single phase samples. The sample Si shows a ferromagnetic-like behavior whereas S2 exhibits an antiferromagnetic-like character with lower magnetic moment and coercive field. Magnetic measurements at high temperature reveal two phase transitions, one related to BiFeO3 and another from alpha-Fe2O3 magnetic impurity in contrast to X-ray diffraction. We observed an increase of remanent polarization, coercive electrical field, and the appearance of interfacial polarization due to higher leakage current density. We discuss how an apparently single phase sample can lead to misleading interpretations in magnetic and dielectric properties. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1549 / 1553

页数：5

共 49 条

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