Highly Tunable Perpendicular Magnetic Anisotropy and Anisotropic Magnetoresistance in Ru-Doped La_(0.67)Sr_(0.33)MnO_(3)Epitaxial Films  

作　　者：华恩达 戴坤杰 王庆 叶欢 刘宽 章金凤 鲁京迪 刘楷 金锋 王凌飞 吴文彬 Enda Hua;Kunjie Dai;Qing Wang;Huan Ye;Kuan Liu;Jinfeng Zhang;Jingdi Lu;Kai Liu;Feng Jin;Lingfei Wang;Wenbin Wu(Hefei National Research Center for Physical Sciences at Microscale,University of Science and Technology of China,Hefei 230026,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China)

机构地区：[1]Hefei National Research Center for Physical Sciences at Microscale,University of Science and Technology of China,Hefei 230026,China [2]Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics Letters》2023年第7期74-79,共6页中国物理快报（英文版）

基　　金：supported by the National Basic Research Program of China(Grant No.2020YFA0309100);the National Natural Science Foundation of China(Grant Nos.12074365,U2032218,and 11974326);the Fundamental Research Funds for the Central Universities(Grant Nos.WK9990000102 and WK2030000035);the China Postdoctoral Science Foundation(Gaint No.2022M713060)。

摘　　要：As a prototypical half-metallic ferromagnet,La_(0.67)Sr_(0.33)MnO_(3)(LSMO)has been extensively studied due to its versatile physical properties and great potential in spintronic applications.However,the weak perpendicular magnetic anisotropy(PMA)limits the controllability and detection of magnetism in LSMO,thus hindering the realization of oxide-based spintronic devices with low energy consumption and high integration level.Motivated by this challenge,we develop an experimental approach to enhance the PMA of LSMO epitaxial films.By cooperatively introducing 4d Ru doping and a moderate compressive strain,the maximum uniaxial magnetic anisotropy in Ru-doped LSMO can reach 3.0×10^(5)J/m^(3)at 10 K.Furthermore,we find a significant anisotropic magnetoresistance effect in these Ru-doped LSMO films,which is dominated by the strong PMA.Our findings offer an effective pathway to harness and detect the orientations of magnetic moments in LSMO films,thus promoting the feasibility of oxide-based spintronic devices,such as spin valves and magnetic tunnel junctions.

关 键 词：ANISOTROPY HIGHLY REALIZATION 

分 类 号：O469[理学—凝聚态物理]