| 摘要 |
PURPOSE:To obtain magnetic recording medium being excellent in magnetic property and rustless property, by a method wherein a magnetic layer including Co, Ni, Cr and oxygen with content of Cr and oxygen within specified region is formed on a non-magnetic macromolecular film by oblique evaporation. CONSTITUTION:A magnetic layer including at least Co, Ni, Cr and oxygen is formed on a non-magnetic macromolecular film by oblique evaporation method. The magnetic layer has Cr in content 2-8atom% and oxygen in content 5- 25atom% and ratio of oxygen to Cr in atom number is 2-10. For example, Cr and Cr-Ni are charged respectively in evaporation sources 1, 2 of the evaporation device, and oxygen from an oxygen exhaust port 3 is introduced in a vacuum chamber 10 and oblique evaporation is performed on polyethylene terephthalate film 8 thereby a magnetic layer is formed. |
