Electric-field control of magnetization in (Co(t)/Pt)n/Pb(Mg1/3Nb2/3)1-xTixO3 multiferroic heterostructures

ORAL

Abstract

A promising way to control magnetism via electric fields is using the converse magnetoelectric effect(CME) in heterostructures composed of ferromagnetic and ferroelectric materials. So far there are few reports on electric-field (E) control of magnetic materials with perpendicular magnetic anisotropy(PMA) which is important in information storage because of its high density and thermostability. In this work, we have systematically studied the CME in heterostructures formed by growing (Co(t)/Pt)n multilayers with different Co thicknesses and n on (011)-orientated ferroelectric Pb(Mg1/3Nb2/3)1-xTixO3 substrates. By tuning Co thickness to the vicinity of the spin reorientation critical thickness, samples with PMA, in-plane magnetic anisotropy and crossover were obtained. They showed dramatic different behaviors of E control of magnetization. The results can be understood by considering the interaction between the piezostrain induced magnetic anisotropy and Co thickness-dependent magnetic anisotropy.

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Authors

  • Ying Sun

    Department of Physics, Tsinghua University, Beijing 100084, China

  • Yong Zhao

    Department of Physics, Tsinghua University, Beijing 100084, China, Tsinghua University, Department of physics, Tsinghua University

  • Aitian Chen

    Department of Physics, Tsinghua University, Beijing 100084, China, Department of Physics, Tsinghua University

  • Yan Liu

    Department of Physics, Tsinghua University, Beijing 100084, China, Department of physics, Tsinghua University

  • Lvkuan Zou

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

  • Xiaoli Zheng

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

  • Qintong Zhang

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

  • Jianwang Cai

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

  • Xiu Han

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China, Beijing National Laboratory for Condensed Matter Physics , Chinese Academy of Sciences

  • Wenbo Wang

    Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA

  • Weida Wu

    Department of Physics and Astronomy, Rutgers University, Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA, Rutgers University, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, 08854, USA