MAGNETIC RECORDING MEDIUM

PURPOSE:To improve the crystal orientability and magnetic characteristic of a magnetic layer and to increase the number of times of CSS by providing a nonmagnetic underlying layer consisting of one kind among In, Ir, Pd, Ru, Ta and Pt between a nonmagnetic hardened layer and magnetic medium layer. CONSTITUTION:An alumite film is coated as the nonmagnetic hardened layer 2 to about 4mum on a disk-shaped aluminum alloy substrate 1. After the film is finished to a specular surface, the film of one kind among In, Ir, Pd, Ru, Ta and Pt is formed as the nonmagnetic underlying layer 3 thereon to the thickness ranging 50-2,400Angstrom and a thin gamma-Fe2O3 film is formed as the magnetic medium layer 4 thereon. The adverse influence of the nonmagnetic hardened layer 2 is prevented and the crystal orientability and magnetic characteristic of the magnetic layer are improved by providing the nonmagnetic underlying layer 3 consisting of, for example, the In film in the above-mentioned manner. The increase in the number of times of the contact start stop CSS is thus made possible.