Narrow Track-Width Single-Pole with Fe-Si-Al-N Thin Film

摘要

High performance perpendicular magnetic recording is very promising for HDTVdigital VTRs which require ultra-high density transfer rate recording. From this viewpoint, the authors have been investigating high track density recording and reproducing characteristics of perpendicular magnetic recording. The reproducing sensitivity of conventional single-pole heads with a single Co-Zr-Nb layer film becomes unstable and smaller when the track width narrows. In addition, these heads have no thermal stability, which would allow glass bonding. In order to solve these problems, the authors developed a thin Fe-Si-Al-N film. The paper describes the features of the new film and its application to single-pole heads.