Control of the surface roughness of magnetic disk

Control of the surface roughness of magnetic disk

A process is described for texturing the surface of magnetic disks which permits control of the micro-roughnesses of the surface through selective oxidation of certain areas of the surface of the substrate used for magnetic disks. For example, islands of oxidation can be produced by rinsing the subs...

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Hauptverfasser: FROHNMEYER EDGAR, SPRINGER IRENE, RIJ KLAUS, SPINZIG STEPHAN
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator FROHNMEYER EDGAR
SPRINGER IRENE
RIJ KLAUS
SPINZIG STEPHAN
description A process is described for texturing the surface of magnetic disks which permits control of the micro-roughnesses of the surface through selective oxidation of certain areas of the surface of the substrate used for magnetic disks. For example, islands of oxidation can be produced by rinsing the substrates in oxygen containing water at an elevated temperature. The islands provide preferential nucleation sites for thin film metal deposition, e.g. a chromium underlayer, to form nodules. These nodules affect the micro-topography of the final magnetic disk.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Control of the surface roughness of magnetic disk
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