Preparation and recording characteristics of Co-γFe_2O_3 High-Density magnetic recording media

Co-γFe_2O_3高密度磁気記録媒体の作製と記録特性

Preparation and recording characteristics of Co-γFe_2O_3 High-Density magnetic recording media

Creators 土井 孝紀

Creators 田万里 耕作

Creators 安藤 貴之

Creators Yamamoto Setsuo

Creators Kurisu Hiroki

Creators 松浦 満

Co-γFe_2O_3perpendicular magnetic recording media were preparedby the CoO-Fe_3O_4single-1ayer deposition method, which is more suitable for mass production than the CoO/ Fe_3O_4 multilayer deposition method. Moderately <100>-oriented Co-γFe_2O_3media with intermediate perpendicular anisotropy (K_u＝6.0 × 10^5erg/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 highly <100>-oriented Co-γFe_2O_3 media with large perpendicular anisotropy (Ku＝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.

[ISSN]0285-0192

[NCID]AN0031390X

info:doi/10.3379/jmsjmag.21.225

[isVersionOf] [URI]http://www.wdc-jp.com/msj/journal/index.html