Title :
Magnetization reversal in magnetic tapes with sequential field pulses
Author :
Flanders, P.J. ; Doyle, W.D. ; Varga, L.
Author_Institution :
Dept. of Phys., Pennsylvania Univ., Philadelphia, PA, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
It is observed after saturation that sequential reverse pulses with fast rise times (<0.3 ns) and amplitudes H1 and H2 (H1<H2) induce a smaller percentage remanence change than a single pulse H2. For comparison, H2 is chosen near the remanence coercivity. The difference has a maximum near H1/H2~0.8 and its amplitude depends on pulse width and on the medium. These results are explained qualitatively by time-limited switching in pairs of interacting particles with different coercivities
Keywords :
coercive force; magnetic particles; magnetic switching; magnetic tapes; magnetisation reversal; remanence; 0.3 ns; coercivity; interacting particles; magnetic tapes; magnetization reversal; remanence; saturation; sequential field pulses; time-limited switching; Coercive force; Force measurement; Hydrogen; Magnetic field measurement; Magnetic materials; Magnetization reversal; Pulse measurements; Remanence; Space vector pulse width modulation; Time measurement;
Journal_Title :
Magnetics, IEEE Transactions on
