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

作　　者：Bo Chen Zi-Run Li Chuan-Fu Huang Yong-Mei Zhang 陈波;李滋润;黄传甫;张永梅(Department of Physics,School of Science,North University of China,Taiyuan 030051,China;School of Physics,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[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

出　　处：《Chinese Physics B》2020年第9期523-528,共6页中国物理B（英文版）

基　　金：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);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 

分 类 号：O469[理学—凝聚态物理]