Patent ID: 6686072
Filing Date: 2004-02-03
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium comprising (1) a non-metallic substrate, (2) an orientation-determining film which determines the crystal orientation of an undercoat film provided directly thereon to cause the texture of the undercoat film to be (200), (3) a non-magnetic undercoat film, (4) a cobalt alloy hexagonal closed packed (hcp) (110) textured magnetic film, and (5) a protective film in order; wherein the orientation-determining film has a crystal structure in which columnar crystal grains are inclined in a radial direction of the substrate; and a ratio of a coercive force in a circumferential direction of the medium (Hcc) to a coercive force in a radial direction of the medium (Hcr) is more than 1.