Different methods of assessing switching field distributions of magnetic recording media

1984/01/01 by E. Wohlfarth, E.P. Wohlfarth · 1 citation
Physics and Astronomy · Materials Science · #Magnetic properties of thin films #Magnetic Properties and Applications #Physics of Superconductivity and Magnetism

paper · doi:10.1109/tmag.1984.1063021

Abstract

The width of the switching field distribution may be measured by the Williams-Comstock parameter 1 - S* or the relative difference between coercive forces CF. These two parameters are shown to be proportional, with constant slope, for many recording tapes measured in the parallel direction. For CrO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> tapes, however, the constant of proportionality is anomalously low due to excellent alignment. Measurements at an angle to the tape direction are interpreted using a simple model. The parameter CF is shown to be consistent with typical shapes of static remanence curves.

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