Method for providing a perpendicular recording medium for use with a ring-shaped recording and reproducing head

摘要

A perpendicular magnetic recording method uses a perpendicular magnetic recording medium. This medium comprises a perpendicular anisotropy film having perpendicular remanent magnetization Mr and longitudinal remanent magnetization Mr PARALLEL , wherein the value of the ratio Mr ORTHOGONAL /Mr PARALLEL is not less than 0.2, but is less than 1.