Co-Cr-Cグラニュラー薄膜の磁気特性に及ぼす下地層効果
2000
We investigated the magnetic properties of Co-Cr-C/SiO2 bilayer film, and of Co-Cr-C/Ag/SiO2, Co-Cr-C/Ti/SiO2, and Co-Cr-C/Ag/Ti/Si02 multilayer films. It was found that a granular Co-Cr-C film annealed at 550°C after deposition on a (10 A) Ag/(1000A) Ti/SiO2 underlayer showed a larger Hc⊥/Hc// ratio (the ratio of the perpendicular coercivity Hc⊥ to the in-plane coercivity Hc//) than films deposited on (10 A)Ag/SiO2 or (1000 A)Ti/SiO2 underlayers. This result is considered to be attributable to the fact that the (10 A)Ag/(1000 A)Ti/SiO2 underlayer promotes the orientation of the c axis of hcp-Co grains and increases the perpendicular coercivity of the film.
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