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Proceedings Paper

A minimax optimization approach to fabrication of CoCrPt thin film
Author(s): Zhen Li; Zuoyi Li; Xiaofei Yang; Long You; Xiaomin Chen; Fang Jin; Junbing Yan; Ren Wan; Xiang Sun
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Paper Abstract

The minimax optimization method is applied broadly to industrial design, agricultural test, automation, economy and so on. In the field of magnetic recording, we utilize it in determining optimal fabricating conditions of recording thin film media. In the procedure of thin film fabrication, the coercivity, the remenance- hickness product and the squareness ratio of magnetic thin film are considered as multiple-objective functions of these parameters: element composition, atmosphere pressure, substrate temperature, post-annealing temperature and thin film thickness. The optimal fabricating conditions and high performance of CoCrPt thin film are obtained using the minimax optimization based on a series of experiments and data. The coercivity of CoCrPt thin film is up to 3523Oe; the remenance-thickness product is up to 1.75 memu/cm2; and the squareness ratio is up to 0.83. The results show that the minimax optimization method can improve the fabricating conditions of recording thin film and is helpful for a short path of achieved high performance of CoCrPt thin film.

Paper Details

Date Published: 15 September 2005
PDF: 4 pages
Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 59660G (15 September 2005); doi: 10.1117/12.649612
Show Author Affiliations
Zhen Li, Huazhong Univ. of Science & Technology (China)
Zuoyi Li, Huazhong Univ. of Science & Technology (China)
Xiaofei Yang, Huazhong Univ. of Science & Technology (China)
Long You, Huazhong Univ. of Science & Technology (China)
Xiaomin Chen, Huazhong Univ. of Science & Technology (China)
Fang Jin, Huazhong Univ. of Science & Technology (China)
Junbing Yan, Huazhong Univ. of Science & Technology (China)
Ren Wan, Huazhong Univ. of Science & Technology (China)
Xiang Sun, Huazhong Univ. of Science & Technology (China)


Published in SPIE Proceedings Vol. 5966:
Seventh International Symposium on Optical Storage (ISOS 2005)
Fuxi Gan; Lisong Hou, Editor(s)

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