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AssigneeHGST Netherlands B.V.
InventorsToshinori Ono, Hiroshi Kanai, Tatsuysa Hinoue, Hiroyuki Suzuki, Hiroshi Inaba
Estimating the term…
Embodiments of the present invention provide recording area separated magnetic recording media (DTMs, BPMs) allowing magnetic heads to fly lower. According to one embodiment, the recording area separated magnetic recording media are configured so that magnetic recording layers have parts with the relatively higher element ratio of a ferromagnetic material, and parts with the lower element ratio of the ferromagnetic material, occurring periodically in the in-plane direction, and the average height from the substrate surface of the parts with the relatively higher element ratio of a ferromagnetic material is higher than the average height from the substrate surface of the parts with the lower element ratio of the ferromagnetic material. In producing recording area separated magnetic recording media with the element ratio of a ferromagnetic material relatively lowered by ion implantation, preliminarily etching the part to be ion implanted makes the height after ion implantation relatively lower than the non-implanted part.
A magnetic recording medium comprising:
A manufacturing method of a magnetic recording medium comprising a magnetic recording layer formed on a substrate, the magnetic recording layer including parts with a relatively higher element ratio of a ferromagnetic material and parts with a relatively lower element ratio of a ferromagnetic material provided periodically in the in-plane direction, an average height from a substrate surface of the parts with a relatively higher element ratio of the ferromagnetic material being higher than an average height from the substrate surface of the parts with a relatively lower element ratio of the ferromagnetic material, the method comprising:
Dependencies are inferred from the claim text.