International Business Machines Corporation

Hitachi Global Storage Technologies Netherlands B.v.

George William Tyndall, Iii

Thomas H Baum

Paul B Comita

Mark Stephen Crowder

Donald Ray Gillis

Andrew M Homola

Charles Allan Brown

Carl Eric Larson

Vedantham Raman

Richard Longstreth White

Hong Deng

Nigel P Hacker

A thin film structure comprising a protective layer structure having at least two different compositions of carbon and nitrogen with the surface of the protective layer having the lowest nitrogen content is disclosed. The protective layer structure of the invention is preferably used over the magnetic material in a thin film magnetic disk. In the protective layer structure of the invention, the durability of a relatively high nitrogen content CNx material is improved by the addition of a surface sublayer of CNx with a relatively low nitrogen concentration. The resulting protective layer structure provides superior durability to either of the thin film compositions used alone achieving a synergistic result. The protective layer structure of the invention has the additional benefit of decreasing the polar surface energy and therefore, improving the corrosion resistance of the film structure. In one embodiment the protective layer of the invention is implemented as two discrete sublayers with the surface sublayer having the lowest nitrogen concentration. In this embodiment the surface sublayer has from 0 to 8 at. % nitrogen and the higher nitrogen content is between 10 and 25 at. % nitrogen at the magnetic layer interface. The protective layer structure of the invention can also be implemented as a film in which the nitrogen content gradually decreases between the magnetic layer and the surface of the protective layer structure.

Magnetic thin film media with a protective layer of CNx having a plurality of compositions

A magnetic recording device having (a) a housing, (b) a disk positioned in the housing or a motor, (c) a motor associated with the disk operable for rotating the disk at a selected rotational speed; (d) a head supported on a slider for a magnetically reading data from or magnetically writing data to the magnetic layer on the disk; (e) an actuator positioned in the housing and connected to the slider for moving the head across the disk; and (f) a liquid or solid, volatile base positioned in the housing to prevent the formation of polymeric deposits.

Magnetic recording device

The invention relates to an improved high performance magnetic recording device. The recording device comprises a magnetic recording disk, a slider having a transducer for reading or writing data on the disk, a motor operable to rotate the disk at speeds greater than 7000 RPM and an actuator connected to the slider to move the slider across the disk. The trailing surface of the slider is coated with a low surface energy film to prevent build up of droplets of liquid contaminants.

Magnetic recording device having a improved slider

The present invention relates to a process for coating a magnetic recording device with a lubricating polymeric film using an ion beam generator.

Magnetic recording medium having a fluorinated polymeric protective

The present invention relates to a method for the interconnection/repair of circuits on a transparent substrate at ambient temperature using laser induced chemical vapor deposition.

Laser interconnection of circuits on transparent substrate

Diamond films are deposited at substrates below temperatures of 400.degree. C. by chemical vapor deposition using a high powered pulsed laser and a vapor which is an aliphatic carboxylic acid or an aromatic carboxylic anhydride.

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San Jose, CA, United States of America

George William Tyndall, Iii