Influence of strain and oxygen vacancies on the magnetoelectric properties of multiferroic bismuth ferrite
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 1-9Download Item:

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.
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http://people.tcd.ie/ederercDescription:
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Author: EDERER, CLAUDE
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American Physical SocietyType of material:
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Physical Review B - Condensed Matter and Materials Physics71
22
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http://dx.doi.org/10.1103/PhysRevB.71.224103Licences: