中国物理B ›› 2021, Vol. 30 ›› Issue (12): 127502-127502.doi: 10.1088/1674-1056/ac0040

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Magnetic anisotropy manipulation and interfacial coupling in Sm3Fe5O12 films and CoFe/Sm3Fe5O12 heterostructures

Lei Shen(沈磊)1,2,†, Guanjie Wu(武冠杰)3,†, Tao Sun(孙韬)1,2,†, Zhi Meng(孟智)1, Chun Zhou(周春)1, Wenyi Liu(刘文怡)4, Kang Qiu(邱康)1, Zongwei Ma(马宗伟)1, Haoliang Huang(黄浩亮)4, Yalin Lu(陆亚林)4, Zongzhi Zhang(张宗芝)3,‡, and Zhigao Sheng(盛志高)1,5,§   

  1. 1 Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences(CAS), Hefei 230031, China;
    2 University of Science and Technology of China, Hefei 230026, China;
    3 Shanghai Ultra-Precision Optical Manufacturing Engineering Research Center and Key Laboratory of Micro and Nano Photonic Structures(MOE), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China;
    4 Anhui Laboratory of Advanced Photon Science and Technology, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China;
    5 Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences, Hefei 230031, China
  • 收稿日期:2021-04-06 修回日期:2021-04-26 接受日期:2021-05-12 出版日期:2021-11-15 发布日期:2021-12-01
  • 通讯作者: Zongzhi Zhang, Zhigao Sheng E-mail:zzzhang@fudan.edu.cn;zhigaosheng@hmfl.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0303603 and 2016YFA0401803), the National Natural Science Foundation of China (Grant Nos. U2032218, 11574316, 11874120, 61805256, and 11904367), the Plan for Major Provincial Science & Technology Project (Grant No. 202003a05020018), and the Key Research Program of Frontier Sciences, CAS (Grant No. QYZDB-SSW-SLH011).

Magnetic anisotropy manipulation and interfacial coupling in Sm3Fe5O12 films and CoFe/Sm3Fe5O12 heterostructures

Lei Shen(沈磊)1,2,†, Guanjie Wu(武冠杰)3,†, Tao Sun(孙韬)1,2,†, Zhi Meng(孟智)1, Chun Zhou(周春)1, Wenyi Liu(刘文怡)4, Kang Qiu(邱康)1, Zongwei Ma(马宗伟)1, Haoliang Huang(黄浩亮)4, Yalin Lu(陆亚林)4, Zongzhi Zhang(张宗芝)3,‡, and Zhigao Sheng(盛志高)1,5,§   

  1. 1 Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences(CAS), Hefei 230031, China;
    2 University of Science and Technology of China, Hefei 230026, China;
    3 Shanghai Ultra-Precision Optical Manufacturing Engineering Research Center and Key Laboratory of Micro and Nano Photonic Structures(MOE), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China;
    4 Anhui Laboratory of Advanced Photon Science and Technology, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China;
    5 Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2021-04-06 Revised:2021-04-26 Accepted:2021-05-12 Online:2021-11-15 Published:2021-12-01
  • Contact: Zongzhi Zhang, Zhigao Sheng E-mail:zzzhang@fudan.edu.cn;zhigaosheng@hmfl.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0303603 and 2016YFA0401803), the National Natural Science Foundation of China (Grant Nos. U2032218, 11574316, 11874120, 61805256, and 11904367), the Plan for Major Provincial Science & Technology Project (Grant No. 202003a05020018), and the Key Research Program of Frontier Sciences, CAS (Grant No. QYZDB-SSW-SLH011).

摘要: The magnetic anisotropy manipulation in the Sm3Fe5O12 (SmIG) films and its effect on the interfacial spin coupling in the CoFe/SmIG heterostructures were studied carefully. By switching the orientation of the Gd3Ga5O12 substrates from (111) to (001), the magnetic anisotropy of obtained SmIG films shifts from in-plane to out-of-plane. Similar results can also be obtained in the films on Gd3Sc2Ga3O12 substrates, which identifies the universality of such orientation-induced magnetic anisotropy switching. Additionally, the interfacial spin coupling and magnetic anisotropy switching effect on the spin wave in CoFe/SmIG magnetic heterojunctions have also been explored by utilizing the time-resolved magneto-optical Kerr effect technique. It is intriguing to find that both the frequency and effective damping factor of spin precession in CoFe/SmIG heterojunctions can be manipulated by the magnetic anisotropy switching of SmIG films. These findings not only provide a route for the perpendicular magnetic anisotropy acquisition but also give a further path for spin manipulation in magnetic films and heterojunctions.

关键词: perpendicular magnetic anisotropy, Sm3Fe5O12 films, interfacial spin coupling, CoFe/Sm3Fe5O12 heterojunction

Abstract: The magnetic anisotropy manipulation in the Sm3Fe5O12 (SmIG) films and its effect on the interfacial spin coupling in the CoFe/SmIG heterostructures were studied carefully. By switching the orientation of the Gd3Ga5O12 substrates from (111) to (001), the magnetic anisotropy of obtained SmIG films shifts from in-plane to out-of-plane. Similar results can also be obtained in the films on Gd3Sc2Ga3O12 substrates, which identifies the universality of such orientation-induced magnetic anisotropy switching. Additionally, the interfacial spin coupling and magnetic anisotropy switching effect on the spin wave in CoFe/SmIG magnetic heterojunctions have also been explored by utilizing the time-resolved magneto-optical Kerr effect technique. It is intriguing to find that both the frequency and effective damping factor of spin precession in CoFe/SmIG heterojunctions can be manipulated by the magnetic anisotropy switching of SmIG films. These findings not only provide a route for the perpendicular magnetic anisotropy acquisition but also give a further path for spin manipulation in magnetic films and heterojunctions.

Key words: perpendicular magnetic anisotropy, Sm3Fe5O12 films, interfacial spin coupling, CoFe/Sm3Fe5O12 heterojunction

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.47.Lx (Magnetic oxides) 78.20.Ls (Magneto-optical effects)