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No.2(pp.53-100)

Home > Issues > Volume 14 (2009) > No.2(pp.53-100)

Electrical and Magnetic Properties of BiFeO₃ Multiferroic Ceramics

Journal of Magnetics, Volume 14, Number 2, 30 Jun 2009, Pages 62-65

M. Roy*

(Department of Physics M. L. S. University), Sumit Jangid(Department of Physics M. L. S. University), Shiv Kumar Barbar(Department of Physics M. L. S. University), Praniti Dave(Department of Physics M. L. S. University)

Abstract

The multiferroic BiFeO₃ has been investigated extensively in both thin film and ceramic form. However, the synthesis of a perfect sample with high resistivity is a prerequisite for examining its properties. This paper reports the synthesis of multiferroic BiFeO₃along with its structural, electrical and magnetic properties in ceramic form. Polycrystalline ceramic samples of BiFeO₃were synthesized by solid-state reaction using high purity oxides and carbonates. The formation of a single-phase compound was confirmed by x-ray diffraction and its lattice parameters were determined using a standard computer program. The microstructural studies and density measurement confirmed that the prepared samples were sufficiently dense for an examination of its electrical and magnetic properties. The dc electrical conductivity studies show that the sample was resistive with an activation energy of ~0.81 eV. The magnetization measurement showed a linear (M~H) curve indicating antiferromagnetic characteristics.

Keywords: multiferroic; X-ray diffraction; conductivity; SEM

DOI: 10.4283/JMAG.2009.14.2.62

Full Text: PDF

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