MULTI-PHASE OVERCOATS FOR MAGNETIC DISCS

MULTI-PHASE OVERCOATS FOR MAGNETIC DISCS

A magnetic disc for use in a magnetic disc drive is provided. The magnetic disc includes a recording surface wherein the recording surface includes a dual phase carbon overcoat. The dual phase carbon overcoat includes an amorphous carbon film sputtered on a magnetic layer. A doped amorphous carbon f...

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Hauptverfasser: CHEN, XIAOHUA, KHAZANOV, ALEXANDER, BORIS, HAFID, ABDELLAH, HWANG, KUO-HSING, NGUYEN, QUY, CUU, TAN, STELLA
Format: Patent
Sprache:eng ; fre ; ger
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator CHEN, XIAOHUA
KHAZANOV, ALEXANDER, BORIS
HAFID, ABDELLAH
HWANG, KUO-HSING
NGUYEN, QUY, CUU
TAN, STELLA
description A magnetic disc for use in a magnetic disc drive is provided. The magnetic disc includes a recording surface wherein the recording surface includes a dual phase carbon overcoat. The dual phase carbon overcoat includes an amorphous carbon film sputtered on a magnetic layer. A doped amorphous carbon film is sputtered on the amorphous carbon film. The dual phase carbon overcoat has demonstrated improved hardness, reduced stiction and superior corrosion resistance over the prior art. A method of manufacturing the magnetic disc is also provided. The method includes providing a sputtering apparatus having a process chamber, providing a partially manufactured magnetic disc having a magnetic layer thereon, placing the partially manufactured magnetic disc within the process chamber, sputtering an amorphous carbon film on the magnetic layer, and sputtering a doped amorphous carbon film on the amorphous carbon film. The process reduces throughput inefficiencies due to down time cleaning and avoids carbon induced damage to the discs.
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language eng ; fre ; ger
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title MULTI-PHASE OVERCOATS FOR MAGNETIC DISCS
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