| 摘要 |
PURPOSE: To obtain a magnetic recording medium having high coercive force and corrosion resistance and decreased in the intrinsic noise of the medium by forming grain boundary phases consisting of elements constituting a nonmagnetic layer at the crystal grain boundaries of a magnetic film. CONSTITUTION: This magnetic recording medium is produced by forming a Co alloy magnetic film 3 via a ground surface layer 2 consisting of Cr which is a nonmagnetic metal on substrate 1 of Al consisting of a nonmagnetic material. The nonmagnetic layer 4 composed of >=1 kinds of the elements selected from the group consisting of Al, Ag, Zn. Sn, Cu, Au, Pb is formed on the magnetic film 3. Further, the grain boundary phases consisting of the elements constituting the nonmagnetic layer 4 are formed at the grain boundaries 5 of the magnetic layer 3. The magnetic recording medium which is improved in the magnetical sepn. degree of the magnetic phase and is decreased in the intrinsic noise of the medium while high coercive force and corrosion resistance are maintained, is thereby obtd. |
