中国物理B ›› 1999, Vol. 8 ›› Issue (1): 14-20.doi: 10.1088/1004-423X/8/1/003

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DOMAIN STRUCTURES AND ANISOTROPY IN Pt1-xCux/Co MULTILAYER THIN FILMS

马平平1, 郑鹉1, 陈金昌1, 徐海2, 韩宝善2   

  1. (1)Department of Physics, Capital Normal University, Beijing 100037, China; (2)State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:1998-04-27 修回日期:1998-07-06 出版日期:1999-01-15 发布日期:1999-01-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Beijing (Grant No. 1962003), China.

DOMAIN STRUCTURES AND ANISOTROPY IN Pt1-xCux/Co MULTILAYER THIN FILMS

Xu Hai (徐海)a, Han Bao-shan (韩宝善)a, Ma Ping-ping (马平平)b, Zheng Wu (郑鹉)b, Chen Jin-chang (陈金昌)b   

  1. a State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b Department of Physics, Capital Normal University, Beijing 100037, China
  • Received:1998-04-27 Revised:1998-07-06 Online:1999-01-15 Published:1999-01-20
  • Supported by:
    Project supported by the Natural Science Foundation of Beijing (Grant No. 1962003), China.

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摘要： The domain structures of Pt1-xCux/Co multilayer films in as-grown and remanent states have been investigated by using magnetic force microscope. The magnetic domain patterns are strongly influenced by the Cu concentration. For pure Pt/Co multilayer in as-grown state, its domain pattern is depicted as island-like one; however, with the Cu doped in Pt spacer layers, the doman patterns become dot-like, but the island-like domain pattern appears again for the Cu concentration of 14 at%. The domain patterns variation can be attributed to the change of effective perpendicular anisotropy Kueff due to the effect of Cu atom doped in the Pt spacer layers. Besides, the domain structures of Pt/Co multilayer films in remanent state after the application of various perpendicular magnetic fields have also been studied.

Abstract: The domain structures of Pt1-xCux/Co multilayer films in as-grown and remanent states have been investigated by using magnetic force microscope. The magnetic domain patterns are strongly influenced by the Cu concentration. For pure Pt/Co multilayer in as-grown state, its domain pattern is depicted as island-like one; however, with the Cu doped in Pt spacer layers, the doman patterns become dot-like, but the island-like domain pattern appears again for the Cu concentration of 14 at%. The domain patterns variation can be attributed to the change of effective perpendicular anisotropy Kueff due to the effect of Cu atom doped in the Pt spacer layers. Besides, the domain structures of Pt/Co multilayer films in remanent state after the application of various perpendicular magnetic fields have also been studied.

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

  • 75.70.Kw
75.30.Gw (Magnetic anisotropy) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures)) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 07.79.Pk (Magnetic force microscopes)