A method for improving corrosion resistance while maximizing magnetic performance of a magnetic disk employed in data storage applications. The invention includes providing a substrate and forming a first layer above the substrate, the first layer having a first degree of abrasion resistance. The invention includes forming a second layer such as a Ni-containing layer above the first layer, the Ni-containing layer having a second degree of abrasion resistance lower than the first degree of abrasion resistance. The invention further includes forming grooves in the Ni-containing layer.
Micro-Texture Media Made By Polishing Of A Selectively Irradiated Surface
Javier Wong - San Francisco CA Li-Ju Judy Lin - San Jose CA Douglas Allan Iams - San Jose CA Hongchuan Wong - Fremont CA Tsutomu Tom Yamashita - San Jose CA
Assignee:
Komag, Inc. - San Jose CA
International Classification:
B05D 306
US Classification:
427599
Abstract:
A method of manufacturing a magnetic disk comprises the steps of: a) providing a substrate with a layer of an amorphous multi-component material at its surface; b) irradiating the amorphous layer (e. g. by applying heat from a heating element, laser beam, or the like) to thereby create micro-structurally changed regions in the amorphous layer; and c) chemo-mechanically polishing the amorphous layer to produce micro-texture features at or near the micro-structurally changed regions. The disk is then completed by depositing additional layers such as an underlayer, a magnetic layer, a protective overcoat, etc.
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