Magneto-optical properties of granular AgCo films

Yuankai Zheng; Zuoyi Li; Z. Q. Lu; Y. S. Hu; Gengqi Lin; Z. L. Peng; X. S. Miao; Weizhong Liu

doi:10.1117/12.251984

20 September 1996 Magneto-optical properties of granular AgCo films

Yuankai Zheng, Zuoyi Li, Z. Q. Lu, Y. S. Hu, Gengqi Lin, Z. L. Peng, X. S. Miao, Weizhong Liu

Proceedings Volume 2890, Optical Recording, Storage, and Retrieval Systems; (1996) https://doi.org/10.1117/12.251984
Event: Photonics China '96, 1996, Beijing, China

Abstract

Ag_1-xCo_x 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.

Citation Download Citation

Yuankai Zheng, Zuoyi Li, Z. Q. Lu, Y. S. Hu, Gengqi Lin, Z. L. Peng, X. S. Miao, and Weizhong Liu "Magneto-optical properties of granular AgCo films", Proc. SPIE 2890, Optical Recording, Storage, and Retrieval Systems, (20 September 1996); https://doi.org/10.1117/12.251984

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