| 摘要 |
PROBLEM TO BE SOLVED: To provide a producing method of a record medium having excellent storage stability of high density information recording, especially information by magnetic recording. SOLUTION: In the producing method of an information record medium in which information is recorded and reproduced by using a magnetic field or light, at least one base layer essentially comprising elements or compds. selected from Cr, Pt, Pd, Au, Fe, Ni, MgO and NiO is formed while the crystalline plane with (100) Miller index of the crystal lattice is controlled to be parallel to the substrate. Further, an L10 regular alloy layer is formed by sputtering under the conditions satisfying P×D>3000, wherein P is the Ar gas pressure (Pa) and D is the distance (mm) between the target and the substrate. This producing method of the record medium consisting of the regular alloy thin film above described is used for a glass substrate for an industrial hard disk. Thereby, the regularity necessary to develop large crystal magnetic anisotropy is promoted at a low temp. at which the glass substrate can be applied so that the recording storage stability of a record medium is improved.
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