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

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We investigated the magnetic properties of Co-Cr-C/SiO_2 bilayer film, and of Co-Cr-C/Ag/SiO_2, Co-Cr-C/Ti/SiO_2, and Co-Cr-C/Ag/Ti/SiO_2 multilayer films. It was found that a granular Co-Cr-C film annealed at 550℃ after deposition on a (10 Å) Ag/(1000Å) Ti/SiO_2 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 Å)Ag/SiO_2 or (1000Å)Ti/SiO_2 underlayers. This result is considered to be attributable to the fact that the(10 Å)Ag/(1000 Å)Ti/SiO_2 underlayer promotes the orientation of the c axis of hcp-Co grains and increases the perpendicular coercivity of the film.
社団法人日本磁気学会の論文
2000-04-15