Title :
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
fDate :
11/1/1995 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
