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
Physical Review B - Condensed Matter and Materials Physics 71 22
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.
Please note: There is a known bug in some browsers that causes an
error when a user tries to view large pdf file within the browser window.
If you receive the message "The file is damaged and could not be
repaired", please try one of the solutions linked below based on the
browser you are using.
Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.