Co-γFe_2O_3高密度磁気記録媒体の作製と記録特性 (<特集>磁気記録媒体)

概要

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Co-γFe_2O_3 perpendicular magnetic recording media were prepared by the CoO-Fe_3O_4 single-layer deposition method, which is more suitable for mass production than the CoO/Fe_3O_4 multilayer depositidn method. Moderately <100>-oriented Co-γFe_2O_3 media with intermediate perpendicular anisotropy (K_u = 6.0 × 10^5 erg/cm^3) were prepared with a wide range of film thicknesses and oxygen partial pressure used in deposition of NiO underlayers. These media showed a superior high-density recording performance comparable to that of hithly <100>-oriented Co-γFe_2O_3 media with large perpendicular anisotropy (K_u = 1.4 × 10^6 erg/cm^3). It is surmised that the superior performance of these media was supported by the longitudinal magnetic component as well as the perpendicular one.
社団法人日本磁気学会の論文
1997-04-15