Calculation of head sensitivity function from 3-D magnetic fields

TitleCalculation of head sensitivity function from 3-D magnetic fields
Publication TypeJournal Articles
Year of Publication1994
AuthorsBurke ER, Gomez RD, Madabhushi R, Mayergoyz ID
JournalMagnetics, IEEE Transactions on
Pagination4278 - 4280
Date Published1994/11//
ISBN Number0018-9464
Keywords3-D, fields;finite, fields;magnetic, function;magnetization;recorded, head;very, heads;magnetisation;sensitivity;, magnetic, narrow, Sensitivity, series;magnetic, tracks;Fourier, tracks;reproduce, widths;head

A head sensitivity function is calculated using 3-D magnetic fields. The 3-D magnetic fields are calculated for recorded tracks with finite widths. The magnetization in the medium is expressed in 2-D Fourier series in the plane of the film and is assumed uniform through the thickness of the film. The reproduce head is idealized. These techniques are applied to data found in the literature for very narrow tracks ( 0.5 mu;m). A surprising amount of the experimental data can be explained by the finite width of the tracks. The fine structure of the measurements can then be isolated and attributed to the particular features of the individual heads