中国物理B ›› 1998, Vol. 7 ›› Issue (1): 47-60.doi: 10.1088/1004-423X/7/1/006

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NONLINEAR MAGNETIZATION AND FREQUENCY CONVERSION OF MAGNETOSTATIC WAVES IN A FERROMAGNETIC SLAB

王奇1, 李春芳1, 鲍家善1, A.D.Boardman2, I. Awai3   

  1. (1)Department of Physics, School of Science, Shanghai University, Shang hai 201800, China; (2)Department of Physics, University of Salford, Salford M5 4WT, UK; (3)Faculty of Engineering, Yamaguchi University, Ube 755, Japan
  • 收稿日期:1996-12-06 修回日期:1997-07-25 出版日期:1998-01-20 发布日期:1998-01-20
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China.

NONLINEAR MAGNETIZATION AND FREQUENCY CONVERSION OF MAGNETOSTATIC WAVES IN A FERROMAGNETIC SLAB

WANG QI (王奇)a, LI CHUN-FANG (李春芳)a, BAO JIA-SHAN (鲍家善)a, I. Awaib, A.D.Boardmanc   

  1. a Department of Physics, School of Science, Shanghai University, Shang hai 201800, China; c Faculty of Engineering, Yamaguchi University, Ube 755, Japan;  b Department of Physics, University of Salford, Salford M5 4WT, UK
  • Received:1996-12-06 Revised:1997-07-25 Online:1998-01-20 Published:1998-01-20
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China.

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摘要： The possibilities of the generation of secondorder dc and secondharmonic magnetic fields excited by the magnetostatic surface wave (M SSW) and backward volume wave (MSBVW) in ferromagnetic films have been analyzed and discussed through the calculations of source terms in the equations satisfying the magnetostatic potentials. The results show that the nonlinear magnetization responses of the film to the MSSW can generate neither dc nor the secondhar monic magnetic fields. And the responses to the MSBVW will not induce the dc field, but can excite secondharmonics under some conditions. The general expressions of third order nonlinear magnetization are also derived and discussed.

Abstract: The possibilities of the generation of second-order dc and second-harmonic magnetic fields excited by the magnetostatic surface wave (M SSW) and backward volume wave (MSBVW) in ferromagnetic films have been analyzed and discussed through the calculations of source terms in the equations satisfying the magnetostatic potentials. The results show that the nonlinear magnetization responses of the film to the MSSW can generate neither dc nor the second-har monic magnetic fields. And the responses to the MSBVW will not induce the dc field, but can excite second-harmonics under some conditions. The general expressions of third order nonlinear magnetization are also derived and discussed.

中图分类号:  (Spin waves)

  • 75.30.Ds
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.70.Rf (Surface magnetism) 75.70.Ak (Magnetic properties of monolayers and thin films)