A thin film magnetic medium and method of producing same.

摘要

A fabrication method and structure for a cobalt alloy thin film magnetic recording medium uses an underlayer (8) of sputter deposited chromium having a thickness of 50 to 200 angstroms which presents the (100) plane of the chromium atoms at the surface upon which the cobalt alloy magnetic thin film layer (9) is to be deposited. The cobalt alloy hexagonal close packed atomic structure is sputtered onto the chromium underlayer and epitaxially grown such that the (110) plane of the cobalt alloy structure is parallel to the media surface. This disposes the cobalt magnetic layer structure to have the C axis (easiest axis of magnetization) parallel to the medium surface to optimize horizontal recording density.