DOI: 10.1063/1.2785945. Anomalous ferromagnetism in spray pyrolysis deposited multiferroic BiFeO3 films

Anomalous ferromagnetism in spray pyrolysis deposited multiferroic BiFeO3 films

10.1063/1.2785945

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Oriented polycrystalline BiFeO3 (BFO) films are deposited on single crystal LaAlO3 (001) substrates by nebulized spray pyrolysis technique at low temperature of ∼300°C. Annealing of the as deposited films in air and oxygen at ∼550°C for 1h is found to produce crystallization and BFO phase formation. X-ray diffraction results show rhombohedral disordered perovskite structure with space group R3m. As revealed by atomic force microscopy, grain size increases with oxygen annealing. Magnetic measurements show well-defined hysteretic loops at room temperature for both the films. However, oxygenation leads to dramatic increase in room temperature ferromagnetism as evidenced by large saturation magnetization of ∼250emu∕cm3. This enhanced magnetization is attributed to the presence of iron oxide rich nanoclusters due to oxygen annealing.

Bibliography

Siwach, P. K., Singh, H. K., Singh, J., & Srivastava, O. N. (2007). Anomalous ferromagnetism in spray pyrolysis deposited multiferroic BiFeO3 films. Applied Physics Letters, 91(12).

Authors 4

P. K. Siwach (first)
H. K. Singh (additional)
Jai Singh (additional)
O. N. Srivastava (additional)

References 20 Referenced 28

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Dates

Type	When
Created	17 years, 11 months ago (Sept. 20, 2007, 10:46 a.m.)
Deposited	2 years, 1 month ago (July 3, 2023, 12:40 a.m.)
Indexed	1 month ago (July 30, 2025, 6:49 a.m.)
Issued	17 years, 11 months ago (Sept. 17, 2007)
Published	17 years, 11 months ago (Sept. 17, 2007)
Published Online	17 years, 11 months ago (Sept. 19, 2007)
Published Print	17 years, 11 months ago (Sept. 17, 2007)

Funders 0

None

BibTeX

@article{Siwach_2007, title={Anomalous ferromagnetism in spray pyrolysis deposited multiferroic BiFeO3 films}, volume={91}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.2785945}, DOI={10.1063/1.2785945}, number={12}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Siwach, P. K. and Singh, H. K. and Singh, Jai and Srivastava, O. N.}, year={2007}, month=sep }

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