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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/31410

Title: Influence of strain and oxygen vacancies on the magnetoelectric properties of multiferroic bismuth ferrite
Author: EDERER, CLAUDE
Author's Homepage: http://people.tcd.ie/edererc
Keywords: Physics
Issue Date: 2005
Publisher: American Physical Society
Citation: Ederer, C., Spaldin, N.A. 'Influence of strain and oxygen vacancies on the magnetoelectric properties of multiferroic bismuth ferrite' in Physical Review B - Condensed Matter and Materials Physics, 71, (22), 2005, pp 1-9
Series/Report no.: Physical Review B - Condensed Matter and Materials Physics
71
22
Abstract: The dependencies on strain and oxygen vacancies of the ferroelectric polarization and the weak ferromagnetic magnetization in the multiferroic material bismuth ferrite, BiFeO3, are investigated using first principles density functional theory calculations. The electric polarization is found to be rather independent of strain, in striking contrast to most conventional perovskite ferroelectrics. It is also not significantly affected by oxygen vacancies, or by the combined presence of strain and oxygen vacancies. The magnetization is also unaffected by strain, however, the incorporation of oxygen vacancies can alter the magnetization slightly, and also leads to the formation of Fe2+. These results are discussed in light of recent experiments on epitaxial films of BiFeO3, which reported a strong thickness dependence of both magnetization and polarization.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/31410
ISSN: http://dx.doi.org/10.1103/PhysRevB.71.224103
Appears in Collections:Physics (Scholarly Publications)

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