Dependence of recording and reproducing characteristics on thickness of Co-Cr layer in perpendicular recording

垂直磁気記録特性のCo-Cr層厚み依存性 ： 計算機シミュレーションによる検討

Dependence of recording and reproducing characteristics on thickness of Co-Cr layer in perpendicular recording

Creators Yamamoto Setsuo

Creators 田河 育也

Creators 中村 慶久

Creators 岩崎 俊一

The influence of the thickness of a Co-Cr layer in a Co-Cr/Ni-Fe double layer medium on the recording and reproducing characteristics was investigated by computer simulation. In practice, the perpendicular media with a relatively thin Co-Cr layer, about 0.1 μm in thickness, but which is thicker than the longitudinal media, produce high reproduced voltage at high densities. The reason is that the sharp magnetic field distribution of a single-pole-head is created for a thin Co-Cr layer by enhancing the head-to-medium magnetic coupling. As a result, the large residual magnetization remains in the recording process, and the high resolution of the singlg-pole-head generates high voltage in reproduction, even at high densities.

[ISSN]0285-0192

[NCID]AN0031390X

https://doi.org/10.3379/jmsjmag.12.147

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