| 摘要 |
PROBLEM TO BE SOLVED: To provide a vertical recording medium suited to recording of reduced medium noise and higher density by micronizing the magnetic particles of a magnetic layer, maintaining particle diameter dispersion small in this case, securing crystal orientation in the magnetic layer of the magnetic particle, especially, securing vertical orientation, and maintaining the arrangement order of magnetic particles. SOLUTION: In the vertical magnetic recording medium provided with a soft magnetic layer, a granular thin film substrate layer, and a vertical magnetic recording layer on a substrate, a metal substrate layer is disposed in the granular thin film substrate layer, the metal particles of the granular thin film layer are separated by a nonmagnetic particle material, and a part of the metal particles is fitted into the metal substrate layer. By forming the vertical magnetic recording layer on the granular thin film substrate, the vertical magnetic recording medium having a good signal to noise ratio and good high-density recording characteristics. COPYRIGHT: (C)2006,JPO&NCIPI |
