Title :
Under-keepered media with MR heads
Author :
Nichols, M. ; Lairson, B.M. ; Coughlin, T.M. ; Gooch, B. ; Kehl, J. ; Perez, J.
Author_Institution :
Rice Univ., Houston, TX, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
This paper reports on using magneto-resistive heads with soft magnetic “under-keeper” layers below the media. A simple model based on imaging is in agreement with experimental data. The keeper layer screens low spatial frequency media signals, narrowing the read pulse slightly. In addition, the keeper introduces noise at low spatial frequency
Keywords :
magnetic heads; magnetic recording noise; magnetoresistive devices; soft magnetic materials; magnetic imaging model; magnetoresistive head; noise; screening; soft magnetic under-keeper layer; Chromium; Cities and towns; Frequency; Magnetic flux; Magnetic heads; Saturation magnetization; Shape; Soft magnetic materials; Space vector pulse width modulation; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
