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Magnetic Anisotropy Induced by Orbital Occupation States in La_(0.67)Sr_(0.33)MnO_(3) Films

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摘要 Interface engineering is an effective and feasible method to regulate the magnetic anisotropy of films by altering interfacial states between films.Using the technique of pulsed laser deposition,we prepared La_(0.67)Sr_(0.33)MnO_(3)(LSMO)and La_(0.67)Sr_(0.33)MnO_(3)/SrCoO_(2.5)(LSMO/SCO)films on(110)-oriented La_(0.3)Sr_(0.7)Al_(0.65)Ta_(0.35)O_(3) substrates.By covering the SCO film above the LSMO film,we transformed the easy magnetization axis of LSMO from the[001]axis to the[110]axis in the film plane.Based on statistical analyses,we find that the corresponding Mn-Mn ionic distances are different in the two types of LSMO films,causing different distortions of Mn-O octahedron in LSMO.In addition,it also induces diverse electronic occupation states in Mn^(3+)ions.The e_(g) electron of Mn^(3+)occupies 3z^(2)-r^(2) and x^(2)-y^(2) orbitals in the LSMO and LSMO/SCO,respectively.We conclude that the electronic spin reorientation leads to the transformation of the easy magnetization axis in the LSMO films.
作者 Huaixiang Wang Jinghua Song Weipeng Wang Yuansha Chen Xi Shen Yuan Yao Junjie Li Jirong Sun Richeng Yu 王怀翔;宋京华;王伟鹏;陈沅沙;沈希;姚湲;李俊杰;孙继荣;禹日成(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physics Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
出处 《Chinese Physics Letters》 SCIE CAS CSCD 2021年第8期115-120,共6页 中国物理快报(英文版)
基金 the National Key Research Program of China(Grant Nos.2017YFA0206200,2016YFA0300701,and2018YFA0208402) the National Natural Science Foundation of China(Grant Nos.11934017,11874413,11574376,and 51972333) the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB33030200) the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant No.2019009)。
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