| 摘要 |
A magnetic recording medium, which comprises a flattening layer with a thickness of 0.1-5.0 mum, a seed layer, a nonmagnetic primer layer containing chromium with a chromium concentration of 77-100 atom %, a Co-Cr type alloy magnetic layer, a protective layer, and a lubricating layer coated sequentially on at least one of the surfaces of a flexible nonmagnetic support member, whereby the seed layer is designed in such a manner that the linear expansion coefficient (ESE) of the seed layer and the linear expansion coefficient (EUL) of the nonmagnetic primer layer satisfy the relation: |ESE-EUL|/EUL<0.3, and the tensile strength (SSE) of the seed layer and the tensile strength (SUL) of the nonmagnetic primer layer satisfy the relation: SSE/SUL>1.
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