Hitachi, Ltd.

Sakae Ohta

Hiroyuki Suzuki

Hiroyuki Matsumoto

Yoshihiro Shiroishi

Kazuetsu Yoshida

Hajime Aoi

Fumio Nakano

Sadao Hishiyama

Tomoyuki Ohno

Kenzo Masuda

Yasushi Kitazaki

Susumu Funamoto

Shyuichi Kojima

Miyuki Kajiki

Makoto Komatsu

This invention relates to a magnetic recording medium wherein the improvement comprises a lubricative film comprising a lubricant having a functional group at one end of the molecule and a lubricant having a functional group at both ends of the molecule. According to the present invention, there are provided a magnetic recording medium having excellent sliding tolerance against the head, reduced adhesiveness and dense surface, and a magnetic storage device using such a recording medium.

Magnetic recording medium having a lubricant film consisting of a

Disclosed is a magnetic recording medium of the magnetic metal thin-film type for longitudinal recording, in which the noise is reduced by selecting the value of maximum torque L (the product of magnetic anisotropy energy Ku and magnetic layer volume v; as measured by setting the axis of rotation in plane of the medium) and the value of magnetic flux .phi. (the product of saturation magnetization Ms and magnetic layer volume v) from a range defined by 0&lt;L/(2.pi..multidot..phi..sup.2)&lt;4.times.10.sup.5 (erg/emu.sup.2).

Magnetic recording media for longitudinal recording

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Odawara, Japan

Sakae Ohta