Hmt Technology Corporation

Stormedia, Inc.

Other

United Module Corporation, Inc.

Atef H Eltoukhy

Edward F Teng

Yassin Mehmandoust

Brij B Lal

Phuong Binh Nguyen

Nader Mahvan

Hamid R Samani

Hung-Chang W Huang

Hsiao-Chu Tsai

Bryan K Clark

Allen J Bourez

Gerard H Vurens

Rick C Price

Kent Kaufman

Wilfred M Goh

Shiro Murakami

Abdoul H Riahi-Samani

Compositely micro-textured thin film, magnetic disc media, with methods and apparatus for producing such, which are characterized by the incorporation of a first stage of micro-texturing provided by etching of a disc substrate, with a second, disparate, micro-texturing stage depositing rounded globules of eutectic alloy on the etched substrate.

Enhanced methods and apparatus for producing micro-textured, thin film, magnetic disc media and compositely micro-textured disc media produced thereby

Hydrogen-treated, sputter deposited, titanium nodules providing enhanced micro-texturing for thin film, magnetic, disk media.

Micro-texturing for sputtered, thin film magnetic media disks utilizing

A method for controlling the application of lubricant to thin film, magnetic disk media entailing ultrasonic vibration of heated disk lubricant.

Method for controlling lubricant thickness on thin film, magnetic disk

An enhanced magnetic head is characterized by sputter induced, micro-texturing yielding rounded globular configurations on slider rail portions. Optimally, this enhanced head is employed in combination with sputter induced micro-textured thin film disk media having a surface or coarseness greater than that of the magnetic head.

Sputter induced micro-texturing enhancement for magnetic head structures

Sputter induced micro-texturing of thin film magnetic media discs entailing the formation of micro-texturing globules comprising a eutectic alloy of Indium and Bismuth.

Magnetic recording disc having a substrate, oxide layer, and a texture

A composite lubricant for thin-film magnetic discs comprising perfluoropolyether (PFPE) lubricant and an anti-oxidant, cyclophosphazene lubricant dispersed in a fluoropentane solvent.

Thin film disc lubrication utilizing disparate lubricant solvent

Thin film disk media which is initially coated with lubricant from the ID or normal head landing area radially outwardly across the data zone. The initially applied lubricant area is thinned and buffed in the data area so as to provide a substantially reduced lubricant layer overlying the data zone characterized by markedly improved coefficient of friction characteristics in relation to what would have been produced without such lubricant removal and buffing.

Magnetic disk having enhanced zone lubrication

A method for manufacturing thin film magnetic media disks entailing the improvement arising from causing spaced electrical probes to engage spaced portions of an exposed outer surface of a disk overcoat layer; creating a voltage across the spaced electrodes; measuring a function of electrical resistance between the ends of the probes in engagement with the exposed outer surface of the overcoat layer; and employing this measured resistance function generally as a measure of wear properties of the overcoat layer.

Methods for evaluating the effectiveness of protective overcoats for

Method of fabricating sputter induced, micro-texturing of thin film,

Thin film media characterized by the utilization of a substantially peritectic seed alloy layer which is sputter deposited so as to provide dispersed, substantially peritectic and homogenous globules underlying subsequently deposited media layers. These media layers may include a metal layer such as chrome and a magnetic layer such as an alloy of cobalt, chromium, and platinum and possibly other ingredients.

Magnetic recording medium having an intermediate layer comprising

Method and magnetic transducer head characterized by enhanced coating of wear resistant carbon layer over an insulating short circuit, preventing layer on a magnetic, data transferring, head.

Method for applying a protective coating on a magnetic recording head

A discontinuous flash chrome interlayer of about 5 to 25 .ANG. is incorporated between the upper and lower magnetic recording alloy layers. This flash non-magnetic separation layer is so thin that it is, in fact, a discontinuous layer, so that while the benefits of having some chrome flashed on the surface of the first portion of the magnetic recording alloy are achieved, yet the upper and lower magnetic recording alloy layers are not completely physically separated as they are in disks made according to known sputtering processes.

Flash chromium interlayer for improved hard disk magnetic recording

Method for enhancing the magnetic and roughness properties of thin film

A magnetic thin-film disc having a magnetic thin film formed of a lower and upper sublayers. The two sublayers are characterized by lower coercivity, smaller grains, and more isolated grains in the lower sublayer, and higher coercivity, and larger grains in the upper sublayer. In one embodiment, the sublayers are characterized by an increasing magnetic remanence on progressing from the outer to the inner diameter of the disc. Also disclosed are sputtering methods for producing the disc.

Thin film medium with layered film gradient

A thin film magnetic disc having a carbon overcoat which is characterized by (a) a thickness of less than about 500 .ANG. and (b) surface nitrogen atoms having a nitrogen (1s) electron principle binding energy, as determined by electron spectroscopy for chemical analysis (ESCA), of about 399.4 eV. The nitrogen atoms enhance lubricant adhesion to the overcoat. In a preferred embodiment, the overcoat is formed by sputtering under an argon/hydrocarbon/nitrogen gas atmosphere to produce long resistance-to-erosion times, and high lubricity properties.

Growing community of inventors

Saratoga, CA, United States of America

Atef H Eltoukhy