DocumentCode
1262812
Title
The origin of large perpendicular magnetic anisotropy observed in Co3Pt alloy thin films
Author
Yamada, Yoshiyasu ; Suzuki, Takao ; Lauhoff, Georg L. ; Kanazawa, Hiroshi
Author_Institution
Inf. Storage Mater. Lab., Toyota Technol. Inst., Nagoya, Japan
Volume
35
Issue
5
fYear
1999
fDate
9/1/1999 12:00:00 AM
Firstpage
2988
Lastpage
2990
Abstract
The relation between the perpendicular magnetic anisotropy constant Ku and the order parameter S of the Co3Pt ordered phase is examined. The ordering process is suggested to be governed by a surface diffusion based on the activation energy obtained and annealing experiments. Lowering the deposition rate shows significant improvement in both Ks and S at substrate deposition temperature Ts=330°C. The utilization of a Ru buffer layer does not contribute to obtain higher Ku and S. This may be due to the rougher surface of Ru buffer layer than Al2 O3(00·1) substrate
Keywords
annealing; cobalt alloys; magnetic thin films; perpendicular magnetic anisotropy; platinum alloys; surface diffusion; 330 degC; Al2O3; Al2O3 substrate; Co3Pt; Co3Pt alloy thin films; Ru buffer layer; activation energy; annealing; deposition rate; large perpendicular magnetic anisotropy; order parameter; ordering process; rougher surface; substrate deposition temperature; surface diffusion; Anisotropic magnetoresistance; Buffer layers; Cobalt alloys; Magnetic anisotropy; Magnetic films; Magnetic materials; Material storage; Perpendicular magnetic anisotropy; Platinum alloys; Substrates;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.801056
Filename
801056
Link To Document