TITLE

Coengineering of ferroelectric and exchange bias properties in BiFeO3 based heterostructures

AUTHOR(S)
Allibe, J.; Infante, I. C.; Fusil, S.; Bouzehouane, K.; Jacquet, E.; Deranlot, C.; Bibes, M.; Barthélémy, A.
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/2/2009, Vol. 95 Issue 18, p182503
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The magnetoelectric coupling existing in some multiferroics may allow the low-power electrical control of spintronics devices. However, room temperature magnetoelectric multiferroics are extremely rare, an exception being BiFeO3, a ferroelectric antiferromagnet. To be used for electrically controllable spintronics, BiFeO3 has to be coupled with a ferromagnetic material through an interfacial exchange interaction, and carefully engineered to show minimum leakage. Here, we propose a Mn doped/undoped bilayer strategy that allows obtaining large exchange bias as well as low leakage. This is an important step toward the manipulation of a magnetization by an electric field in a vertical geometry.
ACCESSION #
45036575

 

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