Electrically Controlled Magnetism

Authors

Christian Binek, University of Nebraska, LincolnFollow
Xi He, University of Nebraska-LincolnFollow
Yi WangFollow
Sarbeswar Sahoo, University of Nebraska-LincolnFollow

Date of this Version

Fall 9-4-2008

Comments

Posted in SPIE. DOI: 10.1117/12.797475

Abstract

Manipulation of magnetically ordered states by electrical means is a promising approach towards novel spintronics devices. We report on the electric control of surface magnetism in Cr2O3 thin films and uniaxial anisotropy in ferroelectric/ferromagnetic heterostructures, respectively. Artificial magnetoelectricity is realized in a BaTiO3/Fe heterostructure. Here, thermally induced coercivity changes of the Fe hysteresis loop are used to derive the stress imposed by the ferroelectric BaTiO3 substrate on the adjacent Fe film. Electrically induced coercivity changes give rise to a giant magnetoelectric susceptibility in the vicinity of the magnetic coercive field.