DocumentCode :
1498148
Title :
SmCo 
With Perpendicular Anisotropy Induced by a (211) Textured Ni 
W Underlayer
Author :
Zhang, L.N. ; Hu, J.F. ; Chen, J.S. ; Ding, J.
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Univ. of Singapore, Singapore, Singapore
Volume :
46
Issue :
6
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
2082
Lastpage :
2085
Abstract :
In this work, we have successfully induced SmCo5-(0001) texture using the Ni4W-(211) underlayer. A tungsten (W) seed layer of 4 nm resulted in a nanocrystalline (211)-textured Ni4W underlayer deposited at room temperature. Highly (0001)-textured SmCo5 was achieved after the sputtering deposition in the temperature range of 500-540°C. The crystallinity of the SmCo5 layer was reduced at higher deposition temperature (¿ 550°C), probably due to W diffusion. The nano-grained SmCo5 thin film deposited at 500°C shows an out-of-plane coercivty of 12.7 kOe with a large perpendicular magnetic anisotropy. The thickness of Ni4 W underlayer can be reduced to 13 nm without a significant change in the large perpendicular magnetic coercivity of the SmCo5 thin film.
Keywords :
cobalt alloys; coercive force; diffusion; magnetic anisotropy; magnetic recording; metallic thin films; nanostructured materials; samarium alloys; sputter deposition; surface texture; SmCo5; crystallinity; diffusion; magnetic recording material; nanocrystalline textured underlayer; nanograined thin film; perpendicular magnetic anisotropy; perpendicular magnetic coercivity; size 4 nm; sputtering deposition; temperature 500 degC to 540 degC; tungsten seed layer; underlayer thickness; Anisotropic magnetoresistance; Coercive force; Glass; Magnetic films; Magnetic materials; Perpendicular magnetic recording; Sputtering; Substrates; Temperature distribution; Transistors; Magnetic recording media; SmCo $_{5}$ ; permanent magnetic material; thin film;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2010.2040067
Filename :
5467415
Link To Document :
