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
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
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.
Received: 23 September 2001
Revised: 13 December 2001
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10074081).
Cite this article:
Zhang Zhen-Rong (张臻蓉), Liu Hong (刘洪), Han Bao-Shan (韩宝善) Investigation of the magnetic domain structure of (PtCoPt)/Si multilayers by magnetic force microscopy 2002 Chinese Physics 11 629
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