DocumentCode :
1387685
Title :
Structural, magnetic and recording properties of CoCrTa/Co3 O4/Pt perpendicular thin films media
Author :
Song, Xing ; Loven, Jay ; Sivertsen, John ; Judy, Jack
Author_Institution :
Dept. of Chem. Eng. & Mater. Sci., Minnesota Univ., Minneapolis, MN, USA
Volume :
32
Issue :
5
fYear :
1996
fDate :
9/1/1996 12:00:00 AM
Firstpage :
3840
Lastpage :
3842
Abstract :
This paper reports an investigation of the structural, magnetic and recording properties of a tri-layer Co80Cr16Ta 4 (2000 Å)/Co3O4 (50 Å)/Pt (100 Å) magnetic thin film. Compared with CoCrTa glass, 50 Å Co3O4 and 100 Å Pt, CoCrTa deposited on the composite Co3O4 (50 Å)/Pt (100 Å) underlayer exhibits strong perpendicular hcp (00.2) crystalline orientation with Δθ50~ 4.1°, fine grains with sub-grain features ~10-40 nm, small S|| ~13%, large room-temperature Hc ~1650 Oe, large R (the ratio between Hc Hc||)~6, and a sharp Hn (perpendicular nucleation field) distribution. Recording measurements performed on the tri-layer film using a thin film tri-pad head showed a pronounced isolated di-pulse in the reproduced waveform, a D50 of ~4500 fr/mm and noise behavior characteristic of a perpendicular medium
Keywords :
chromium alloys; cobalt alloys; cobalt compounds; coercive force; magnetic thin films; perpendicular magnetic recording; platinum; tantalum alloys; Co80Cr16Ta4-Co3O 4-Pt; CoCrTa/Co3O4/Pt perpendicular medium; coercivity; crystalline orientation; grain structure; magnetic properties; nucleation field; recording properties; structural properties; trilayer magnetic thin film; Chromium; Crystallization; Glass; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetic recording; Noise measurement; Performance evaluation; Perpendicular magnetic recording;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.539190
Filename :
539190
Link To Document :
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