中国物理B ›› 2002, Vol. 11 ›› Issue (6): 629-634.doi: 10.1088/1009-1963/11/6/321

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Investigation of the magnetic domain structure of (PtCoPt)/Si multilayers by magnetic force microscopy

刘洪1, 张臻蓉2, 韩宝善2   

  1. (1)Department of Physics, Capital Normal University, Beijing 100037, China; (2)State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:2001-09-23 修回日期:2001-12-13 出版日期:2002-06-12 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10074081).

Investigation of the magnetic domain structure of (PtCoPt)/Si multilayers by magnetic force microscopy

Zhang Zhen-Rong (张臻蓉)a, Liu Hong (刘洪)b,  Han Bao-Shan (韩宝善)a   

  1. a State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b Department of Physics, Capital Normal University, Beijing 100037, China
  • Received:2001-09-23 Revised:2001-12-13 Online:2002-06-12 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10074081).

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摘要： The domain structure of (PtCoPt)/Si multilayers in the dc demagnetized state has been investigated by magnetic force microscopy. The domain structure is found to change dramatically as the thickness of the non-magnetic Si sublayer (tSi) increases. Together with the analysis of magnetic properties, the variation of the domain period indicates that the domain wall energy decreases. Using the model developed by Draaisma and de Jonge, the domain wall energy is obtained.

关键词: magnetic force microscopy, multilayers, domain structure

Abstract: The domain structure of (PtCoPt)/Si multilayers in the dc demagnetized state has been investigated by magnetic force microscopy. The domain structure is found to change dramatically as the thickness of the non-magnetic Si sublayer (tSi) increases. Together with the analysis of magnetic properties, the variation of the domain period indicates that the domain wall energy decreases. Using the model developed by Draaisma and de Jonge, the domain wall energy is obtained.

Key words: magnetic force microscopy, multilayers, domain structure

中图分类号:  (Domain walls and domain structure)

  • 75.60.Ch
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures)) 68.37.Rt (Magnetic force microscopy (MFM))