6533b82bfe1ef96bd128dfcd
RESEARCH PRODUCT
Multiferroic BiFeO<inf>3</inf> for conductance control at the LaAlO<inf>3</inf>/SrTiO<inf>3</inf>-interface
Er-jia GuoChristian MixGerhard JakobSimone FinizioMathias KlaeuiM. Vafaee Khanjanisubject
Condensed Matter::Materials ScienceMagnetizationPolarization densityExchange biasMaterials scienceMagnetic domainFerromagnetismCondensed matter physicsElectric fieldAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsFerroelectricitydescription
Multiferroic materials possessing both magnetic and ferroelectric order enable in principle to switch order parameters using not the direct reciprocal field, e.g. to switch the magnetization by an electric field or the electric polarization by a magnetic field. A recent breakthrough was achieved by the demonstration of the ferromagnetic switching of a Co layer with an electric field employing the multiferroic BiFeO 3 [1]. The latter material is a perovskite based oxide that shows stable ferro-electricity as well as an antiferromagnetic order at room temperature [2,3]. Due to a Dzyaloshinskii-Moriya interaction induced by rotation of oxygen octahedra leading to noncollinear Fe-O-Fe bonds a small canted ferromagnetic moment exists that can couple to a neighboring ferromagnetic layer. In addition exchange bias effects can occur in such a configuration.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-05-01 | 2015 IEEE Magnetics Conference (INTERMAG) |