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Proceedings Paper

Magneto-optical properties of granular AgCo films
Author(s): Yuankai Zheng; Zuoyi Li; Z. Q. Lu; Y. S. Hu; Gengqi Lin; Z. L. Peng; X. S. Miao; Weizhong Liu
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Paper Abstract

Ag1-xCox alloy films were prepared by RF magnetron sputtering onto glass substrate. And the samples were annealed at 200 degrees C and 400 degrees C AgCo films with Co contents below 32 at percent are generally superparamagnetic in their as-deposition state. The fraction of Co atoms in the ferromagnetic component increases monotonically with increasing annealing temperature (Ta) and/or at percent Co. The (theta) k also increase, but for the Co contents above 45 at percent, as the Ta increase, the (theta) k increase slowly. For Ag55Co45 (theta) k equals 0.08 degrees, reflection (R) equals 0.90 and Hc equals 2000 Oe, and for Ag50Co50 (theta) k equals 0.10 degrees, R equals 0.85 and Hc equals 2500 Oe are obtained. We found that most film's magnetic hysteresis loops with applied external field H normal to film surface and in film plane are similar. We analyzed these phenomenon according to the film's structure.

Paper Details

Date Published: 20 September 1996
PDF: 4 pages
Proc. SPIE 2890, Optical Recording, Storage, and Retrieval Systems, (20 September 1996); doi: 10.1117/12.251984
Show Author Affiliations
Yuankai Zheng, Huazhong Univ. of Science and Technology (China)
Zuoyi Li, Huazhong Univ. of Science and Technology (China)
Z. Q. Lu, Huazhong Univ. of Science and Technology (China)
Y. S. Hu, Huazhong Univ. of Science and Technology (China)
Gengqi Lin, Huazhong Univ. of Science and Technology (China)
Z. L. Peng, Huazhong Univ. of Science and Technology (China)
X. S. Miao, Huazhong Univ. of Science and Technology (China)
Weizhong Liu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 2890:
Optical Recording, Storage, and Retrieval Systems
Baogen Feng; Yoshito Tsunoda, Editor(s)

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