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

PDF - Published Version
Download (382Kb) | Preview


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
Depositing User: Ms Neetu Chandra
Date Deposited: 04 Oct 2012 08:10
Last Modified: 04 Oct 2012 08:10

Actions (login required)

View Item View Item