中国物理B ›› 1999, Vol. 8 ›› Issue (8): 613-623.doi: 10.1088/1004-423X/8/8/009

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LATTICE MODEL OF STRIPE DOMAIN STRUCTURE IN FERROMAGNETIC ULTRATHIN FILMS

陶瑞宝1, 胡梁宾2, 厉海金2   

  1. (1)Center for Theoretical Physics,Chinese Center of Advanced Science and Technology(World laboratory),Beijing 100080,China;Department of Physics, Fudan University,Shanghai 200433,China; (2)Department of Physics, Fudan University,Shanghai 200433,China
  • 收稿日期:1999-01-03 修回日期:1999-03-27 出版日期:1999-08-15 发布日期:1999-08-20
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China and by the State Education Commission of China.

LATTICE MODEL OF STRIPE DOMAIN STRUCTURE IN FERROMAGNETIC ULTRATHIN FILMS

HU LIANG-BIN (胡梁宾)a, LI HAI-JIN (厉海金)a, TAO RUI-BAO (陶瑞宝)ab   

  1. a Department of Physics, Fudan University,Shanghai 200433,China; b Center for Theoretical Physics,Chinese Center of Advanced Science and Technology(World laboratory),Beijing 100080,China
  • Received:1999-01-03 Revised:1999-03-27 Online:1999-08-15 Published:1999-08-20
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China and by the State Education Commission of China.

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摘要： A lattice model is proposed to describe the stripe domain sructure in a magnetic ultrathin film that consists of only a few or tens of monolayers and has a perpendicular anisotropy.The dipo;ar energies of the perpendicular and in-plane uniform magnetic states and the stripe domain structures in a magnetic ultrathin film are calculated separately using Ewald's lattice summation method. The thickness dependence of the stripe domain structure is investigated, and the stability of the stripe dimain structure is discussed. The results show that for magnetic ultrathin films the stripe dimain structure may have sensitive dependence on their thickness.

Abstract: A lattice model is proposed to describe the stripe domain sructure in a magnetic ultrathin film that consists of only a few or tens of monolayers and has a perpendicular anisotropy.The dipolar energies of the perpendicular and in-plane uniform magnetic states and the stripe domain structures in a magnetic ultrathin film are calculated separately using Ewald's lattice summation method. The thickness dependence of the stripe domain structure is investigated, and the stability of the stripe dimain structure is discussed. The results show that for magnetic ultrathin films the stripe dimain structure may have sensitive dependence on their thickness.

中图分类号:  (Domain structure (including magnetic bubbles and vortices))

  • 75.70.Kw
75.70.Ak (Magnetic properties of monolayers and thin films) 75.30.Gw (Magnetic anisotropy) 75.40.Mg (Numerical simulation studies)