Nanoscale piezoresponse and magnetic studies of multiferroic Co and Pr co-substituted BFO thin films
authors Panwar, N; Coondoo, I; Tomar, A; Kholkin, AL; Puli, VS; Katiyar, RS
nationality International
journal MATERIALS RESEARCH BULLETIN
author keywords Thin films; Chemical synthesis; Atomic force microscopy; Magnetic properties
keywords BIFEO3; PHYSICS
abstract Piezoresponse Force Microscopy (PFM) technique has been employed to acquire out-of-plane (OPP) piezoresponse images and local piezoelectric hysteresis loop in rhombohedrally distorted Bi1-xPrxFe1-yCoyO3 [x = 0, 0.05; y = 0.05] polycrystalline thin films fabricated via chemical solution deposition method. PFM images revealed that piezoelectric contrast is dependent upon the film composition. Furthermore, negative self-polarization effect was observed in the cobalt substituted BFO film. Well saturated local piezo-hysteresis loops were monitored and an increase was noticed in the piezoelectric coefficient (d(33)) value with cobalt doping (25.1 pm/V) whereas with Pr co-substitution in BFCO film, the piezoelectric behavior was almost suppressed. Pr and cobalt co-substituted film exhibited the lowest leakage current density. Magnetic behavior (M-H curves) exhibited nearly eight times enhancement in the saturation magnetization values in the Co- and Co-Pr substituted films. The present study provides the different elements' substitution effect on the local piezoelectric and magnetic properties of BiFeO3 multiferroic thin film. (C) 2012 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0025-5408
year published 2012
volume 47
issue 12
beginning page 4240
ending page 4245
digital object identifier (doi) 10.1016/j.materresbull.2012.09.026
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000313851200049
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