Effects of substrate temperature on magnetic properties of CoCrTa/Cr films

Author

Shen, Y. ; Laughlin, D.E. ; Lambeth, D.N.

Author_Institution

Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

3261

Lastpage

3263

Abstract

The effects of substrate temperature on CoCrTa/Cr thin films were investigated by depositing CoCrTa films on Cr underlayers/sur with various crystallographic textures at both room temperature and elevated temperature. Contrary to the notion that crystallographic textures of {1120} and {1100} are required to obtain high in-plane coercivity (H _c) and low noise in Co/Cr based thin-film media, the present experimental results show that both H_c and ΔM depend more strongly on the sputter temperature of the magnetic layer than on its crystallographic texture. It was also found that the ΔM of {1101}_Co/{110}_Cr textured films is lower than that of the {1120}_Co/{200}_Crfilms with similar H_c. This suggests that {1101}_Co/{110}_Crtextured media might have better signal-to-noise properties

Keywords

chromium; chromium alloys; cobalt alloys; coercive force; ferromagnetic properties of substances; magnetic recording; magnetic thin films; metallic thin films; sputter deposition; sputtered coatings; tantalum alloys; texture; CoCrTa alloys; CoCrTa films; CoCrTa-Cr; Cr underlayers/sur; SNR; crystallographic textures; elevated temperature; experimental results; longitudinal thin film media; low noise; magnetic properties; room temperature; signal-to-noise properties; sputter temperature; substrate temperature; textured media; thin-film media; Atomic layer deposition; Chromium; Crystallography; Glass; Magnetic films; Magnetic noise; Magnetic properties; Sputtering; Substrates; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179777

Filename

179777