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Proceedings Paper

Hooklike domain transition of MR magnetic head in the process of reversal magnetization
Author(s): Jun Zhu; Jinyue Yu; Chunsheng Yang; Bingchu Cai
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Paper Abstract

The requirement to recording density is always increasing with the rapid development of information technology. MR magnetic head was developed under the situation. The main problem met in the application of MR read head is the Barkhausen noise due to the magnetic domain activities in sensor element. There are reports indicated that magnetic domain will tend to single domain structure when the ratio of length and height of rectangle sensor is over 20 and the problem of Barkhausen noise can be resolved. The element which length, width and height is 300 micrometers , 3 approximately 6 micrometers and 40 nm respectively with the ratio of length and height over 50 is studied by bitter powder method. We found that multi-domain activities exist in sensor resulting from the irregular shape of lead line.

Paper Details

Date Published: 29 November 2000
PDF: 3 pages
Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); doi: 10.1117/12.408304
Show Author Affiliations
Jun Zhu, Shanghai Jiao Tong Univ. (China)
Jinyue Yu, Shanghai Jiao Tong Univ. (China)
Chunsheng Yang, Shanghai Jiao Tong Univ. (China)
Bingchu Cai, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 4086:
Fourth International Conference on Thin Film Physics and Applications

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