Title :
Effect of deposition conditions on roughness and corrosion behavior of stacked CoCrPt:SiO2PMR media
Author :
Zhao, J.M. ; Piramanayagam, S.N. ; Hu, J.F.
Author_Institution :
Data Storage Inst., A*STAR (Agency for Sci., Technol. & Res.), Singapore
Abstract :
The columnar grain structure of modern perpendicular recording media (PMR) introduces a nanoscaled rougher topography, making the media be susceptible to contact damage, the poorer coverage of carbon overcoat and severer wear-induced corrosion. In order to understand the details how the deposition conditions affect the PMR tribological performance, a stacked CoCrPt:SiO2 PMR media is proposed and the dependence of its roughness and corrosion behavior on magnetic layer deposition conditions were investigated. The results reveal that the proposed media deposited under the appropriately chosen conditions can improve the surface roughness and corrosion behavior without more compromising the magnetic recording performance.
Keywords :
chromium alloys; cobalt alloys; corrosion; crystal microstructure; nanostructured materials; perpendicular magnetic recording; platinum alloys; silicon compounds; sputter deposition; surface roughness; wear; CoCrPt:SiO2; PMR tribological performance; carbon overcoat; columnar grain structure; corrosion; deposition conditions; magnetic layer deposition; nanoscaled rougher topography; perpendicular recording media; severer wear-induced corrosion; stacked PMR media; surface roughness; Amorphous magnetic materials; Corrosion; Electrodes; Magnetic recording; Perpendicular magnetic recording; Rough surfaces; Sputtering; Substrates; Surface roughness; Surface topography; corrosion behavior; perpendicular recording media; stacked magnetic layers; surface roughness;
Conference_Titel :
Magnetic Recording Conference, 2009. APMRC '09. Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
978-9810-82191-3
DOI :
10.1109/APMRC.2009.4925361
