Komag Corporation

Javier Wong

Gerardo Bertero

Andrew M Homola

Tu Chen

Tsutomu Tom Yamashita

Li-Ju J Lin

Hongchuan Wong

Douglas Allan Iams

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.

Multi-layer texture layer

A method for polishing a glass or glass ceramic substrate comprises the step of using a slurry comprising both diamond and CeO,particles. We have discovered that the presence of both diamond and CeO,particles permits one to polish at a high glass removal rate, and concurrently, to leave a texture on the surface of the glass substrate.

Mechanical texturing of glass and glass-ceramic substrates

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.

Micro-texture media made by polishing of a selectively irradiated surface

Growing community of inventors

San Francisco, CA, United States of America

Javier Wong