Structural, Magnetic, Optical and Electrical Properties of Ba Substituted BiFeO3

被引：22

作者：

Selvadurai, A. Paul Blessington ^{[1
]}

Pazhanivelu, V. ^{[1
]}

Murugaraj, R. ^{[1
]}

机构：

[1] Anna Univ, Dept Phys, Madras 600044, Tamil Nadu, India

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2014年 / 27卷 / 03期

关键词：

Bismuth Ferrite; Multiferroic materials; X-ray diffraction; Magnetization; AC electrical properties; MULTIFERROIC PROPERTIES; DIELECTRIC-PROPERTIES; PHASE-TRANSITIONS; CRYSTAL; LA;

D O I：

10.1007/s10948-013-2349-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ba2+ substituted bismuth ferrite (BFO) (Bi1-x Ba (x) FeO3, x=0, 0.1, 0.2, and 0.3) was prepared by chemical route using nitrates as a precursor, and sintered at 830 A degrees C for 1 hr. The structural, optical, magnetic, and electrical properties of the prepared samples were investigated to understand the effect of Ba2+ substitution in BFO. The samples were characterized by X-ray diffraction (XRD), and shows an impurity phase which reduces drastically on substitution. Magnetic measurements were carried out at room temperature up to a field of 20 kOe. Magnetic hysteresis loops revealed a significant change in magnetization on Ba2+ substitution in BFO with unsaturated nature. Further, the Fourier transformed Infrared (FTIR) and Ultra Violet Visible (U-V Vis) spectra of the samples at room temperature shows as a change in spectral behavior on substitution. The AC electrical conductivity analyzed through Impedance analyser at different temperatures and frequencies. The ac conductivity and its activation energies for the samples are found to be frequency and temperature dependent and also vary with Ba2+ substitution in BFO.

引用

页码：839 / 844

页数：6

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