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

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

2974

Lastpage

2976

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; Co_83.5Cr_10.5Ta₆-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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617815

Filename

617815