Domain switching in spray pyrolysis-deposited nano-crystalline BiFeO3 films

Single-phase nano-scale BiFeO3 (BFO) films have been prepared under a controlled substrate temperature by a simple spray pyrolysis method. Fourier-transform infrared spectroscopy results indicate that single-phase BFO is deposited at low temperature. A magnetoelectric coupling to the anti-ferromagne...

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Bibliographic Details
Published in:Physica scripta 2012-12, Vol.86 (6)
Main Authors: Annapu Reddy, V, Pathak, N P, Nath, R
Format: Article
Language:English
Online Access:Get full text
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Summary:Single-phase nano-scale BiFeO3 (BFO) films have been prepared under a controlled substrate temperature by a simple spray pyrolysis method. Fourier-transform infrared spectroscopy results indicate that single-phase BFO is deposited at low temperature. A magnetoelectric coupling to the anti-ferromagnetic and α-β phase transitions was observed at 350.2 and 832.8 °C, respectively. The capacitance-voltage (C-V) curves exhibit two coercive fields corresponding to ferroelastic (71° and 109°) and ferroelectric (180°) domains. Ferroelectric domain switching is dominant at lower electric fields. A non-volatile domain switching in the BFO films can prevent domain wall pinning and can enhance fatigue behavior in the films.
ISSN:0031-8949
1402-4896
DOI:10.1088/0031-8949/86/06/065701