DocumentCode :
757946
Title :
Self-heating in thin-film magnetic recording heads due to write currents
Author :
Ju, Y. Sungtaek
Author_Institution :
Dept. of Mech. & Aerosp. Eng., California Univ., Los Angeles, CA, USA
Volume :
41
Issue :
12
fYear :
2005
Firstpage :
4443
Lastpage :
4448
Abstract :
Self-heating due to write currents is a critical concern in thin-film magnetic recording heads; the reliability of the head-media interface and magnetoresistive sensors can be degraded by excessive temperature rise during writing operations. A combined experimental and theoretical study shows that the magnetic saturation of yoke structures and the heat transfer across the air bearing strongly influence the magnitude and spatial distribution of the temperature rise. This paper describes three-dimensional numerical heat transfer simulations that can accurately model self-heating as a function of the amplitude and frequency of write current pulses.
Keywords :
heat transfer; magnetic heads; magnetic recording; magnetic thin film devices; reliability; air bearing; heat transfer; magnetic saturation; self-heating; thin-film magnetic recording heads; write currents; yoke saturation; yoke structures; Degradation; Heat transfer; Magnetic films; Magnetic heads; Magnetic recording; Magnetic sensors; Magnetoresistance; Temperature sensors; Thin film sensors; Writing; Air bearing; eddy current; magnetic heads; self-heating; yoke saturation;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2005.858697
Filename :
1556717
Link To Document :
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