Patent ID: 6572988
Filing Date: 2003-06-03
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium having a magnetic recording film formed on a substrate, wherein said magnetic recording film has an average magnitude of saturation magnetization Ms(T=5Â° K) at 5Â° K and average magnitude of saturation magnetization Ms(T=300Â° K) at 300Â° K which satisfy: Ms(T=300Â° K)/Ms(T=5Â° K)&gE;0.75, and said magnetic recording film is a polycrystalline film formed of magnetic crystal grains; andwherein, with the size of a magnetic crystal grain of said magnetic recording film being defined in terms of the diameter of a circle having the same area as the magnetic crystal grain along the film surface, the average size d of magnetic crystal grains is greater than 5 nm and smaller than 15 nm.