Spray pyrolysis deposited multiferroic BiFeO3 films

Siwach, P. K. and Singh, Jai and Singh, H. K. and Varma, G. D. and Srivastava, O. N. (2008) Spray pyrolysis deposited multiferroic BiFeO3 films. Journal of Applied Physics, 105 (7). 07D916-1-07D916-3. ISSN 1089-7550

Preview

PDF - Published Version
Download (382Kb) | Preview

Official URL: http://dx.doi.org/10.1063/1.3072823

Abstract

BiFeO3 (BFO) films were prepared by nebulized spray pyrolysis technique on a single crystal LaAlO3 (001) substrate at ∼ 300 °C and annealing in oxygen at ∼ 550 °C for 1 h. In all films BFO is the majority phase having a rhombohedrally distorted structure with R3m symmetry and lattice parameters are a = 3.96 Å and α = 89.7°. Atomic force microscopy reveals smooth and dense surface morphology. Despite the G-type antiferromagnetic spin structure of BFO the present BFO show well-defined M-H loops and unexpected ferromagnetism as evidenced by large saturation magnetization, ∼ 125 emu/cc. The origin of anomalous ferromagnetism in the present films has been traced to the presence of nanometric Fe2O3 embedded in the BFO matrix.

Item Type:	Article
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	04 Oct 2012 08:10
Last Modified:	04 Oct 2012 08:10
URI:	http://npl.csircentral.net/id/eprint/650

Actions (login required)

View Item