| 摘要 |
PURPOSE:To enable positioning of a magnetic head with good accuracy by using a vertically magnetic double-layered magnetic disk formed with magnetic films having vertical magnetic anisotropy in double structure and a magnetic head including a magneto-resistance effect type magnetic head. CONSTITUTION:A servo layer 10 of a vertical magnetic recording medium consisting of CoCr and having 0.5mum film thickness is formed by a sputtering method on a flexible substrate 11 consisting of a polyimide. A nonmagnetic layer 9 which is sputtered SiO2 film of 0.1mum is formed on the servo layer 10 and thereafter, a data layer 8 of the vertical recording medium consisting of CoCr and having 0.3mum film thickness is formed by a sputtering method on the nonmagnetic layer 9. A protective film 7 which is a sputtered SiO2 film of 0.02mum is formed on the data layer 8, by which the vertically magnetic double-layered disk is obtd. The magnetic head 1 has the structure having a recording element 2, a yoke 6 and a magneto-resistance effect a recording element 2, a yoke 6 and a magneto-resistance effect element 5 on the slider side surface in parallel with a traveling direction. Servo information is always obtd. and the phase determination of the magnetic head with good accuracy is permitted if such disk and head is used. |
