Kabushiki Kaisha Toshiba

Tsuyoshi Onitsuka

Kaori Kimura

Satoshi Shirotori

Yoshiyuki Kamata

Takeshi Iwasaki

Akihiko Takeo

Akira Watanabe

Kazutaka Takizawa

Masahiro Takashita

According to one embodiment, there is provided a magnetic recording medium which includes a base, a magnetic recording layer having convex-shaped magnetic layers, which is formed on the base, and a protective film formed on the magnetic recording layer. There are gaps in a region surrounded by the protective film, the surface of the base, and each side wall of each magnetic layer.

Magnetic recording medium and method for producing the same

A manufacturing method of a magnetic recording medium includes steps of forming a magnetic recording layer, a first mask layer, a second mask layer containing silicon as primary component, a strip layer, a third mask layer, and a resist layer, a step of patterning the resist layer to provide a pattern, steps of transferring the pattern to the third mask layer, to the strip layer, and to the second mask layer, a step of removing the strip layer by wet etching and of stripping the third mask layer and the resist layer above the magnetic recording layer, steps of transferring the pattern to the first mask layer and to the magnetic recording layer, and a step of stripping the first mask layer remaining on the magnetic recording layer.

Method of manufacturing magnetic recording medium

A magnetic recording medium a magnetic recording medium includes a soft magnetic layer formed on a substrate, magnetic patterns made of a protruded ferromagnetic layer separated from each other on the soft magnetic layer, and a nonmagnetic layer formed between the magnetic patterns, a nitrogen concentration therein being higher on a surface side than on a substrate side.

Magnetic recording medium and method of manufacturing the same

Magnetic recording medium and magnetic recording apparatus

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Hino, Japan

Tsuyoshi Onitsuka