Magnetic recording disk sputtering process and apparatus

摘要

A process is provided for producing a thin-film magnetic longitudinal recording disk having a coercive anisotropy with a larger coercivity in a circumferential direction than in a radial direction of a disk. A substrate textured with circumferential grooves is provided. The textured substrate is then heated and a thin-film nucleating layer is sputtered above the textured substrate. Subsequently, a thin film magnetic layer of a hexagonal close-packed cobalt alloy is deposited above the nucleating layer.