Showa Denko Kabushiki Kaisha

Kazunori Onami

Hiroshi Sakai

Mikio Suzuki

Hiroshi Kanazawa

A low noise magnetic recording medium having a high coercive force and adapted for use with a MR head. The magnetic recording medium comprises a non-magnetic substrate having thereon a first non-magnetic underlayer and a magnetic layer comprising a Co alloy provided on the non-magnetic underlayer. The non-magnetic underlayer comprises an alloy represented by the formula: (Ni,Al),M,, wherein M is one of Cr (X&equals;1-40 at %), Mo (X&equals;1-50 at %), W (X&equals;1-60 at %), V (X&equals;1-35 at %), Zr (X&equals;1-25 at %), Nb (X&equals;1-35 at %) and Pd (X&equals;1-25 at %), and when M includes two or more of Cr, Mo, W, V, Zr, Nb and Pd, X is from 1 to 60 at %.

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Chiba, Japan

Kazunori Onami