Patent ID: 7517438
Filing Date: 2009-04-14
Classification: G11B

Abstract:
1. A system for manufacturing a magnetic recording disk, comprising: a magnetic-recording-layer preparation chamber in which a magnetic recording layer is prepared on a substrate; an anisotropy-allowing layer preparation chamber in which an anisotropy-allowing layer to allow magnetic anisotropy to the magnetic recording layer is prepared on the substrate by sputtering prior to preparation of the magnetic recording layer, as a relatively larger number of sputtered particles having direction components along a direction of the magnetic anisotropy to be allowed are incident on the substrate; and a transfer mechanism for transferring the substrate from the anisotropy-allowing layer preparation chamber to the magnetic recording layer preparation chamber; wherein the anisotropy-allowing layer is made of nitride of niobium, tantalum, niobium alloy or tantalum alloy; or nitrogen-including niobium, tantalum, niobium alloy or tantalum alloy; further comprising: a gas-exposure chamber in which a prepared anisotropy-allowing layer is exposed to atmospheric gas, nitrogen gas or oxygen gas, prior to preparation of the magnetic recording layer in the magnetic-recording-layer preparation chamber.