MAGNETIC DISK MEDIUM, MAGNETIC HEAD, MAGNETIC DISK APPARATUS USING THEM, AND PRODUCTION METHOD OF THE DISK APPARATUS

摘要

A method of producing a magnetic recording disk medium, which comprises the step of forming island-like protrusions by sputtering a target consisting principally of an intermetallic compound on a substrate on which a magnetic alloy film is formed. This method can shorten a single processing time, improve thermal stability of the protrusions, and maintain the shape of these protrusions. The resulting magnetic disk medium is not likely to adhere to the head in the case of a narrow head gap. This method can be also applied to the formation of island-like protrusions on the opposed surface of the magnetic head to a slider. A magnetic disk apparatus having a high recording density and reliable lubricity can be obtained by applying the resulting magnetic disk medium or magnetic head.