title: Predicted magnetoelectric effect in Fe/BaTiO3 multilayers: ferroelectric control of magnetism.
abstract: An unexplored physical mechanism which produces a magnetoelectric effect in ferroelectric-ferromagnetic multilayers is studied based on first-principles calculations. Its origin is a change in bonding at the ferroelectric-ferromagnet interface that alters the interface magnetization when the electric polarization reverses. Using Fe/BaTiO3 multilayers as a representative model, we show a sizable difference in magnetic moments of Fe and Ti atoms at the two interfaces dissimilar by the orientation of the local electric dipole moments. The predicted magnetoelectric effect opens a new direction to control magnetic properties of thin-film layered structures by electric fields.
authors.affiliation: Department of Physics and Astronomy, Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: Chun-Gang
authors.initials: CG
authors.lastname: Duan
authors.forename: S S
authors.initials: SS
authors.lastname: Jaswal
authors.forename: E Y
authors.initials: EY
authors.lastname: Tsymbal