Enhanced Magnetoelectric Coupling in BaTiO3-BiFeO3 Multilayers-An Interface Effect.

ABSTRACT: Combining various (multi-)ferroic materials into heterostructures is a promising route to enhance their inherent properties, such as the magnetoelectric coupling in BiFeO3 thin films. We have previously reported on the up-to-tenfold increase of the magnetoelectric voltage coefficient α ME in BaTiO3-BiFeO3 multilayers relative to BiFeO3 single layers. Unraveling the origin and mechanism of this enhanced effect is a prerequisite to designing new materials for the application of magnetoelectric devices. By careful variations in the multilayer design we now present an evaluation of the influences of the BaTiO3-BiFeO3 thickness ratio, oxygen pressure during deposition, and double layer thickness. Our findings suggest an interface driven effect at the core of the magnetoelectric coupling effect

SUBMITTER: Hohenberger S 

PROVIDER: S-EPMC6982203 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature