Magnetic recording medium and magnetic recording/reproducing apparatus
AssigneesKabushiki Kaisha Toshiba, Showa Denko K.K.
InventorsFutoshi Nakamura, Takashi Hikosaka, Soichi Oikawa, Takeshi Iwasaki, Tomoyuki Maeda, Hiroshi Sakai, Kenji Shimizu, Akira Sakawaki
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Abstract
An orientation control layer having a granular structure is formed between a substrate and magnetic recording layer, contains a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains.
Claims26
A magnetic recording medium comprising a nonmagnetic substrate, an orientation control layer formed on the nonmagnetic substrate, having a granular structure containing a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains, and a magnetic recording layer formed on the orientation control layer,
- wherein the base material contains at least one material selected from the group consisting of boron, silicon, tantalum, chromium, aluminum, zirconium, and nitrides and carbides thereof.
A magnetic recording/reproducing apparatus comprising
- a recording/reproducing head, and
- a magnetic recording medium comprising a nonmagnetic substrate, an orientation control layer formed on the nonmagnetic substrate, having a granular structure containing a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains, and a magnetic recording layer formed on the orientation control layer,
- wherein the base material contains at least one material selected from the group consistin of boron, silicon, tantalum, chromium, aluminum, zirconium, and nitrides and carbides thereof.
Dependencies are inferred from the claim text.