The role of disk carbon and slider in water adsorption

Author

Smallen, M. ; Lee, J.K. ; Chao, A. ; Enguero, J.

Author_Institution

Conner Peripherals, San Jose, CA, USA

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4137

Lastpage

4139

Abstract

Water adsorption was measured on carbon overcoated, thin film magnetic recording disks and magnetic recording heads. Measurements were made using an ellipsometer with a humidity chamber mounted on the sample stage. Water adsorption is dependent primarily on the hydrogen content of the carbon overcoat, for both lubed and unlubed disks. Water adsorption is independent of the lube type and thickness, except when the carbon overcoat has a low hydrogen content. In the latter case, water adsorption depends on the functional endgroup of the lube and slightly on lube thickness. Water adsorption on magnetic recording heads depends both on the head composition and surface roughness

Keywords

adsorption; carbon; ellipsometry; magnetic disc storage; magnetic heads; magnetic thin film devices; water; C:H; H₂O; carbon overcoat; ellipsometer; head composition; humidity chamber; hydrogen content; lubed disks; magnetic recording heads; slider; surface roughness; thin film magnetic recording disks; unlubed disks; water adsorption; Adhesives; Disk drives; Humidity measurement; Hydrogen; Magnetic heads; Magnetic recording; Rough surfaces; Surface roughness; Temperature measurement; Thickness measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334014

Filename

334014