中国物理B ›› 2020, Vol. 29 ›› Issue (9): 97702-097702.doi: 10.1088/1674-1056/abab73

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Electrostatic switch of magnetic core-shell in 0-3 type LSMO/PZT composite film

Bo Chen(陈波), Zi-Run Li(李滋润), Chuan-Fu Huang(黄传甫), Yong-Mei Zhang(张永梅)   

  1. 1 Department of Physics, School of Science, North University of China, Taiyuan 030051, China;
    2 School of Physics, China University of Mining and Technology, Xuzhou 221116, China
  • 收稿日期:2020-04-07 修回日期:2020-07-15 接受日期:2020-08-01 出版日期:2020-09-05 发布日期:2020-09-05
  • 通讯作者: Bo Chen E-mail:BoChen@nuc.edu.cn
  • 基金资助:
    Project supported by the Science Foundation of North University of China (Grant No. 2017026), the Applied Basic Research Foundation of Shanxi Province, China (Grant No. 201801D221143), the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi, China (Grant No. 2019L0535), and the National Natural Science Foundation of China (Grant No. 11847012).

Electrostatic switch of magnetic core-shell in 0-3 type LSMO/PZT composite film

Bo Chen(陈波)1, Zi-Run Li(李滋润)1, Chuan-Fu Huang(黄传甫)2, Yong-Mei Zhang(张永梅)1   

  1. 1 Department of Physics, School of Science, North University of China, Taiyuan 030051, China;
    2 School of Physics, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2020-04-07 Revised:2020-07-15 Accepted:2020-08-01 Online:2020-09-05 Published:2020-09-05
  • Contact: Bo Chen E-mail:BoChen@nuc.edu.cn
  • Supported by:
    Project supported by the Science Foundation of North University of China (Grant No. 2017026), the Applied Basic Research Foundation of Shanxi Province, China (Grant No. 201801D221143), the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi, China (Grant No. 2019L0535), and the National Natural Science Foundation of China (Grant No. 11847012).

摘要: By dispersing La1-xSrxMnO3 (LSMO) granule into PbZrxTi1-xO3 (PZT) matrix, the 0-3 type LSMO/PZT composite film is synthesized through chemical solution method. The asymmetry of the top and bottom electrodes introduces novel electrostatic screening on LSMO/PZT interface. As electric polarization is switched between upward and downward orientations, the evolution of exchange bias, diode transport, and magnetoresistance is observed. The result implies the electrostatic switch of magnetic core-shell in the present film. In detail, as the spontaneous polarization is upward or downward in the PZT matrix, the ferromagnetic/antiferromagnetic or ferromagnetic/ferromagnetic core-shell structure is formed in LSMO granule, respectively. This work would develop a novel device for spintronics and metamaterial.

关键词: electric polarization, magnetic core-shell, exchange bias, conductance

Abstract: By dispersing La1-xSrxMnO3 (LSMO) granule into PbZrxTi1-xO3 (PZT) matrix, the 0-3 type LSMO/PZT composite film is synthesized through chemical solution method. The asymmetry of the top and bottom electrodes introduces novel electrostatic screening on LSMO/PZT interface. As electric polarization is switched between upward and downward orientations, the evolution of exchange bias, diode transport, and magnetoresistance is observed. The result implies the electrostatic switch of magnetic core-shell in the present film. In detail, as the spontaneous polarization is upward or downward in the PZT matrix, the ferromagnetic/antiferromagnetic or ferromagnetic/ferromagnetic core-shell structure is formed in LSMO granule, respectively. This work would develop a novel device for spintronics and metamaterial.

Key words: electric polarization, magnetic core-shell, exchange bias, conductance

中图分类号:  (Polarization and depolarization)

  • 77.22.Ej
75.75.Fk (Domain structures in nanoparticles) 75.30.Et (Exchange and superexchange interactions) 73.50.Jt (Galvanomagnetic and other magnetotransport effects)