DocumentCode :
1487227
Title :
Effect of argon sputtering pressure on the magnetic properties and morphology of TbFeCo films
Author :
Hatwar, T.K. ; Palumbo, A.C. ; Stinson, D.G.
Author_Institution :
Eastman Kodak Co., Rochester, NY, USA
Volume :
24
Issue :
6
fYear :
1988
fDate :
11/1/1988 12:00:00 AM
Firstpage :
2775
Lastpage :
2777
Abstract :
The effect of argon sputtering pressure on the magnetooptic and structural properties of TbFeCo amorphous films was investigated. The films were prepared by DC magnetron sputtering from a TbFeCo homogeneous alloy target. At low argon pressures, the Tb concentration in the film was lower than in the target, while at high pressures, the Tb concentration was greater in the film than in the target. The films deposited at low sputtering pressure have high Kerr rotation and reflectivity. The Kerr-hysteresis-loop squareness decreases and slantedness increases with increasing Ar pressure. The films prepared at low Ar pressure were very smooth and without detectable columnar growth. This supports the hypothesis that the columns are not required for the film to possess perpendicular anisotropy. The study indicates that it is possible to increase the performance and stability of the film by choosing appropriate deposition conditions
Keywords :
Kerr magneto-optical effect; cobalt alloys; ferrimagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic properties of amorphous substances; magnetic thin films; magneto-optical recording; reflectivity; sputtered coatings; terbium alloys; Ar sputtering pressure; DC magnetron sputtering; Kerr rotation; Kerr-hysteresis-loop squareness; Tb concentration; TbFeCo films; amorphous films; magnetic properties; magnetooptical properties; morphology; perpendicular anisotropy; reflectivity; stability; structural properties; Amorphous magnetic materials; Amorphous materials; Anisotropic magnetoresistance; Argon; Magnetic films; Magnetic properties; Magnetooptic effects; Optical films; Reflectivity; Sputtering;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.92242
Filename :
92242
Link To Document :
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