Title :
Effects of CrNi pre-layer on magnetic properties of CoCrTa longitudinal media
Author :
Okumura, Y. ; Yasui, M. ; Akita, T. ; Maeda, M. ; Yang, X.B. ; Fujimori, H.
Author_Institution :
Hard Disk Div., Kubota Corp., Itami, Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
We have found that higher coercivity can be achieved on CoCrTa/Cr films by introducing a CrNi pre-layer between underlayer Cr and NiP plated layer. Coercivity is dependent on the Ni content in CrNi layer, and shows a maximum at Ni=40at%. Comparing crystallographic texture and microstructure of the media with and without Cr60Ni40 pre-layer, we concluded that the increase of coercivity is attributed to a reduced intergranular magnetic coupling
Keywords :
chromium; chromium alloys; cobalt alloys; coercive force; exchange interactions (electron); ferromagnetic materials; magnetic multilayers; magnetic recording noise; nickel alloys; sputtered coatings; tantalum alloys; texture; Co83.5Cr10.5Ta6-Cr-CrNi; coercivity; crystallographic texture; longitudinal media; magnetic properties; media noise; reduced intergranular magnetic coupling; Chromium; Coercive force; Couplings; Crystallography; Magnetic anisotropy; Magnetic films; Magnetic properties; Magnetostriction; Microstructure; Perpendicular magnetic anisotropy; Sputtering; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
