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Magnetic-recording-medium

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Magnetic recording medium

Details

Inventors: Yazawa, Kenji; Baba, Kenichi;
Assignee: Sony Corporation (Tokyo, JP)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:

A magnetic recording medium having a non-magnetic substrate, a bismuth layer of less than 100 .ANG. thick formed on one major surface of the non-magnetic substrate and a magnetic metal thin film formed on the bismuth layer.

DETAILED DESCRIPTION Accordingly, it is an object of the present invention to provide a magnetic recording medium which can obviate the above defects inherent in the conventional magnetic recording medium.
It is another object of the present invention to provide a magnetic recording medium which can present high coercive force and high rectangular ratio without employing an oblique evaporation method.
It is still another object of the present invention to provide a magnetic recording medium which can obtain superior recording sensitivity and reproduced output.
It is a further object of the present invention to provide a magnetic recording medium having an isotropic magnetic characteristics in the plane of magnetic layer.
According to one aspect of the present invention, there is provided a magnetic recording medium comprising: a non-magnetic substrate; a first layer made of bismuth formed on said substrate, said first layer having a thickness less than 100 .
ANG.
; and a ferromagnetic metal layer formed over said first layer, said magnetic recording medium having an isotropic magnetic characteristics on a major surface of said magnetic recording medium.
The other objects, features and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings through which the like references designate the same elements and parts.

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