ANTIFERROMAGNETIC TO PARAMAGNETIC PHASE TRANSITIONS IN BISMUTH FERRITE (BiFeO3) CERAMICS BY SOLID STATE REACTION

Multiferroic BiFeO3 ceramics were prepared by solid state reaction and high energy ball milling. XRD analysis showed that the ceramic crystallises in a rhombhohedral perovskite phase. The ferroelectric hysteresis measured at room temperature demonstrates a lossy loop with unsaturated behaviour, indi...

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Bibliographic Details
Published in:Ceramics (Praha) 2012-01, Vol.56 (2), p.127-129
Main Author: Bhole, C P
Format: Article
Language:English
Subjects:
Antiferromagnetism
Ball milling
BiFeO3 Ceramics
Bismuth
Ceramics
Dielectric constant
Dielectric Properties
Ferroelectric materials
Ferroelectricity
Phase transformations
Solid state
Solid state reaction
X-ray diffraction
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Summary:Multiferroic BiFeO3 ceramics were prepared by solid state reaction and high energy ball milling. XRD analysis showed that the ceramic crystallises in a rhombhohedral perovskite phase. The ferroelectric hysteresis measured at room temperature demonstrates a lossy loop with unsaturated behaviour, indicating a partial reversal of polarisation. A dielectric constant with temperature measurement revealed an anomaly around 350 C for all frequencies and is intimately associated with the antiferromagnetic to paramagnetic phase transition of BiFeO3.
ISSN:0862-5468
1804-5847