Invention Grant
US07510788B2 Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiOx layer and method of manufacturing same 失效
利用第一钴磁性层和第二Pd-SiOx层的垂直磁记录介质及其制造方法

Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiOx layer and method of manufacturing same
Abstract:
A perpendicular magnetic recording medium is disclosed that exhibits reduced media noise and enhanced thermal stability of recorded magnetization, and thus provides a medium of high recording density and excellent read-write performance. The perpendicular magnetic recording medium comprises a magnetic film on a nonmagnetic substrate. The magnetic film is a multilayered lamination film composed of alternately laminated first magnetic layers of cobalt and second magnetic layers of palladium, the second magnetic layers containing SiO2. By setting a ratio of Ku2 to Ku to a value not smaller than a specified value, the compatibility between the ease of writing-in to the perpendicular magnetic recording medium by a head and the thermal stability of recorded magnetization is more improved.
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