Ferroelectrically induced weak ferromagnetism

Ferroelectrically induced weak ferromagnetism

We present a strategy to design structures for which a polar lattice distortion induces weak ferromagnetism. We identify a large class of multiferroic oxides as potential realizations and use density-functional theory to screen several promising candidates. By elucidating the interplay between the p...

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Bibliographic Details
Published in:Physical review letters Vol. 100; no. 2008
Main Authors: Fennie, C. J., Center for Nanoscale Materials
Format: Journal Article
Language:English
Published: United States 01-01-2008
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DESIGN
ELECTRIC FIELDS
FERROMAGNETISM
MAGNETIZATION
OXIDES
POLARIZATION
SCREENS
SYMMETRY
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Summary:We present a strategy to design structures for which a polar lattice distortion induces weak ferromagnetism. We identify a large class of multiferroic oxides as potential realizations and use density-functional theory to screen several promising candidates. By elucidating the interplay between the polarization and the Dzyaloshinskii-Moriya vector, we show how the direction of the magnetization can be switched between 180{sup o} symmetry equivalent states with an applied electric field.
Bibliography:USDOE Office of Science (SC)
DE-AC02-06CH11357
ANL/CNM/JA-61562
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.100.167203