发明授权
US07556871B2 Magnetic recording medium containing first and second recording layers, each layer containing a columnar structure 有权
含有第一和第二记录层的磁记录介质,每层包含柱状结构

Magnetic recording medium containing first and second recording layers, each layer containing a columnar structure
摘要:
Embodiments of the invention provide a perpendicular magnetic recording medium capable of reconciling a high recording density with high thermal stability, and having a high write-ability while maintaining high magnetic anisotropy energy. In one embodiment, a perpendicular magnetic recording medium has a soft-magnetic underlayer, and magnetic recording layers, and the magnetic recording layers comprises a first recording layer containing magnetic grains oriented in a direction normal to a medium plane, and a second recording layer containing magnetic grains tilted in a cross-track direction. There can be provided a perpendicular magnetic recording medium resistant to thermal fluctuation, small in medium noise, and excellent in write-ability.
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