Ferroelectric control of magnetization in BiFeO3/CoFe heterostructures.

ORAL

Abstract

The cross coupling between ferroic order parameters in multiferroics opens an alternative for the control of magnetism in magnetoelectric devices by purely electrical means. We first report on the exchange coupling between BiFeO3, an antiferromagnetic ferroelectric , and CoFe. We then show that the domain structure of the ferromagnet can be changed by poling the ferroelectric layer. Finally, we will discuss the implementation of our findings into possible device schemes.

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Authors

  • M. Gajek

    • University of Califonia at Berkeley
    • Department of Physics, and Material Science and Engineering, University of California, Berkeley, CA 94720, USA.
    • Department of Physics, UC Berkeley

  • L. Martin

    • University of Califonia at Berkeley
    • Department of Physics, and Material Science and Engineering, University of California, Berkeley, CA 94720, USA.

  • John Heron

    • University of Califonia at Berkeley

  • J. Seidel

    • University of Califonia at Berkeley
    • UC Berkeley
    • UC Santa Barbara
    • University of Cambridge
    • FZ Dresden-Rossendorf, Germany
    • Oakridge National Lab
    • Lawrence Berkeley National Lab
    • TU Dresden, Germany
    • National Chiao Tung University, Taiwan
    • Department of Physics, and Material Science and Engineering, University of California, Berkeley, CA 94720, USA.
    • Department of Physics, UC Berkeley

  • R. Ramesh

    • University of California at Berkeley
    • University of California, Berkeley, CA, 94720
    • University of California-Berkeley
    • Department of Physics, and Material Science and Engineering, University of California, Berkeley, CA 94720, USA.
    • Department of Physics, UC Berkeley
    • Dept. of Materials Science and Engineering, University of California, Berkeley, CA 94720