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Proceedings Paper

Magnetic and magneto-optical properties of Co-Pt alloy films before and after vacuum annealing
Author(s): Ming Li; Zhihong Jiang; Defang Shen; Qinwo Shen
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Paper Abstract

Co-Pt alloy films with perpendicular magnetic anisotropy and 100 percent remanence ratio were successfully prepared using e-beam coevaporation. A series of vacuum annealing was done on these alloy samples to study their thermal stability. The experimental results were as follows: a) For annealing temperature at 200 to approximately 300 degrees C, the Kerr rotation angle was almost unchanged or presented a slow decrease with the lasting of annealing, and the increase in coercivity was also small; b) For annealing temperature above 300 degrees C, both coercivity and Kerr rotation angle dropped prominently, and in the mean time magnetization became partly in-plane; c) Thermal stability is also probably a problem that needs to be solved for CoPt alloy films. The change of magnetic and magneto-optical properties of Co-Pt alloy films during annealing was considered to be related to the strength variation of different textures in films.

Paper Details

Date Published: 20 September 1996
PDF: 6 pages
Proc. SPIE 2890, Optical Recording, Storage, and Retrieval Systems, (20 September 1996); doi: 10.1117/12.251981
Show Author Affiliations
Ming Li, Shanghai Institute of Metallurgy (China)
Zhihong Jiang, Shanghai Institute of Metallurgy (China)
Defang Shen, Shanghai Institute of Metallurgy (China)
Qinwo Shen, Shanghai Institute of Metallurgy (China)

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

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