Effects of Cr intermediate layers on CoCrPt thin film media on NiAl underlayers

Author

Lee, Li-Lien ; Laughlin, David E. ; Fang, Leo ; Lambeth, David N.

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

2728

Lastpage

2730

Abstract

Sputter-deposited NiAl underlayers can induce better in-plane c-axis textures in the overlying CoCrPt films and have a smaller grain size than Cr underlayers. However, it is found that the CoCrPt/NiAl films on glass substrates have on lower coercivity values than the CoCrPt/Cr films. A scheme which inserts a Cr intermediate layer, about 2.5 nm thick, between the CoCrPt and NiAl layers is found to greatly improve the in-plane magnetic properties of the CoCrPt/NiAl films. The existing (101¯0) texture of the CoCrPt/NiAl films is enhanced by the Cr intermediate layer. Coercivity as high as 4500 Oe can be achieved. This increase is attributed to the change in interface structure

Keywords

aluminium alloys; chromium; chromium alloys; cobalt alloys; coercive force; magnetic thin films; nickel alloys; platinum alloys; sputtered coatings; CoCrPt thin film media; CoCrPt-Cr-NiAl; Cr intermediate layers; coercivity; glass substrates; grain size; in-plane magnetic properties; interface structure; sputter-deposited NiAl underlayers; texture; Chromium; Cobalt alloys; Coercive force; Grain size; Lattices; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic properties; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490105

Filename

490105