MAGNETIC STORAGE MEDIUM, METHOD OF MANUFACTURING MAGNETIC STORAGE MEDIUM, INFORMATION STORAGE DEVICE, AND APPARATUS FOR MANUFACTURING MAGNETIC STORAGE MEDIUM

摘要

In a magnetic storage device in which the width in a medium in-plane direction of a servo pattern in a servo region is larger than the width of a medium in-plane direction of dots in a data region, the magnetization in a vertical direction in the servo pattern is maintained to be stable. The concentration of a non-magnetic element at the grain boundaries of the magnetic films forming the servo pattern is higher than the concentration of a non-magnetic element in the grains of the magnetic film. Such a magnetic storage medium can be provided by a method of manufacturing the magnetic storage medium including a non-magnetic film arranging step of arranging the non-magnetic film only on the magnetic films forming the servo pattern out of the magnetic films forming the servo pattern and the magnetic films forming dots, and a segregation step of segregating the non-magnetic element at the grain boundaries of the magnetic films forming the servo pattern by heating the non-magnetic films arranged by the non-magnetic film arranging step.