| 摘要 |
PROBLEM TO BE SOLVED: To provide a thin film for a high-density recording medium that solves the problem of high-temperature process which a thin-film medium of a CuAu- type regular alloy F1-x Mx (F: Fe, Co, M: Pd, Ir, Pt, 0.35<x<0.65) has and accordingly is excellent in mass production and reliability, and also provide a production method therefor. SOLUTION: A magnetic recording medium comprises a ferromagnetic thin film formed on a substrate (or on the foundation layer of the substrate), a ferromagnetic particle layer consisting of ferromagnetic particles or a ferromagnetic particle layer formed by the growth of the ferromagnetic particles in a nonmagnetic matrix on the substrate. In this case, characteristically, the ferromagnetic particles have CuAu type regular structure having the composition represented by F1-x Mx (F: Fe, Co, M: Pd, Ir, Pt, 0.35<x<0.65), and an existing rate for B in F1-x Mx is 0.01 to 0.30.
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