Title :
Tin oxide overcoats for thin film magnetic recording media
Author :
Novotny, V.J. ; Kao, A.S.
Author_Institution :
IBM Almaden Res. Center, San Jose, CA, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
Material and tribological properties of reactively sputtered tin oxide films were determined as a function of deposition conditions. Increased substrate deposition temperature is shown to improve hardness and to lower wear rate. An oxygen partial pressure of around 0.01 Pa yields maximum hardness and minimum stress and wear rate. Films prepared at these partial pressures and at 150°C are stoichiometric and crystalline. Thin-film magnetic recording media with lubricated tin oxide overcoats have low static friction and good start/stop features
Keywords :
hardness; magnetic recording; sputtered coatings; storage media; tin compounds; wear; 0.01 Pa; 150 degC; SnO2; crystalline; deposition conditions; hardness; minimum stress; overcoats; partial pressure; reactively sputtered; start/stop features; static friction; stoichiometric; substrate deposition temperature; thin film magnetic recording media; tribological properties; wear rate; Crystallization; Friction; Magnetic films; Magnetic materials; Magnetic recording; Sputtering; Stress; Substrates; Temperature; Tin;
Journal_Title :
Magnetics, IEEE Transactions on
