Title :
Laminated CoPtCr/Cr films for low noise longitudinal recording
Author :
Yang, M.M. ; Lambert, S.E. ; Howard, J.K. ; Hwang, C.
Author_Institution :
IBM Corp., San Jose, CA, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
The magnetic properties and recording performance of laminated CoPtCr/Cr films were studied. The authors investigated the effects of Cr underlayer thickness, magnetic layer thickness, and Cr interlayer thickness, and compared the results of laminated films to those of unlaminated films. Media noise reduction was observed using laminated films. A 3-nm thick nonmagnetic Cr interlayer is sufficient to effectively reduce the media noise. The microstructure of these films was analyzed using transmission electron microscopy. The results confirm the proposed noise reduction mechanism
Keywords :
chromium; chromium alloys; cobalt alloys; magnetic recording; noise; platinum alloys; transmission electron microscope examination of materials; CoPtCr-Cr; interlayer thickness; laminated films; low noise longitudinal recording; magnetic layer thickness; magnetic properties; media noise; noise reduction mechanism; transmission electron microscopy; underlayer thickness; Chromium; Coercive force; Magnetic analysis; Magnetic films; Magnetic flux; Magnetic noise; Magnetic properties; Magnetic recording; Noise reduction; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
