DocumentCode
1261885
Title
Electrostatic popping in AMR and GMR heads
Author
Baker, Bill R.
Author_Institution
Quantum Corp., Milpitas, CA, USA
Volume
35
Issue
5
fYear
1999
fDate
9/1/1999 12:00:00 AM
Firstpage
2583
Lastpage
2585
Abstract
Dielectric breakdown of insulating layers between the MRE (magneto resistive element) and the conducting shields generates another type of base line shift or popping noise in MR heads. Pulse shapes are similar to those of thermal asperities, but they can be bipolar and can occur without a disk. Measurements illustrate the difficulties of characterizing these pulses. A physical model is proposed to explain the behavior, and a simple SPICE simulation shows similar pulse behavior
Keywords
SPICE; electric breakdown; giant magnetoresistance; magnetic heads; magnetic recording noise; magnetoresistive devices; AMR head; GMR head; SPICE simulation; base line shift; conducting shield; dielectric breakdown; electrostatic popping noise; insulating layer; magnetoresistive element; pulse shape; Dielectric breakdown; Dielectrics and electrical insulation; Electrostatics; Magnetic heads; Magnetic shielding; Noise generators; Noise shaping; Pulse measurements; Pulse shaping methods; Shape;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.800897
Filename
800897
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