Patent Number: 6,255,006

Title: Magnetic recording medium

Abstract: A magnetic recording medium comprising a non-magnetic substrate having thereon a non-magnetic undercoat, a magnetic film and optionally a protective film. The magnetic film comprises a material containing Co as a main component. The non-magnetic undercoat comprises at least two layers including a first undercoat film and a second undercoat film provided on the first undercoat film. The first undercoat film comprises a material containing Cr as a main component, and the second undercoat film comprises a material selected from the group consisting of a Cr/Nb-base alloy, a Cr/W-base alloy, a Cr/V-base alloy and a Cr/Mo-base alloy as a main component.

Inventors: Ohnami; Kazunori (Chiba, JP), Kanazawa; Hiroshi (Chiba, JP), Sakai; Hiroshi (Chiba, JP)

Assignee: Showa Denko Kabushiki Kaisha

International Classification: G11B 5/66 (20060101); G11B 005/66 ()

Expiration Date: 07/03/2018