By Topic

High speed coherent switching below the Stoner-Wohlfarth limit

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
He, L. ; Dept. of Phys. & Astron., Alabama Univ., Tuscaloosa, AL, USA ; Doyle, W.D. ; Fujiwara, H.

Measurements of the switching characteristics of high coercivity magnetic tapes for field pulse widths ⩾0.6 ns have been reported previously. In an effort to develop a simple theoretical framework in which to develop a simple magnetization dynamics, the well established Gilbert form of the Landau-Lifshitz equation, applied to a uniaxial, single domain particle with uniform magnetization was chosen. The results which were obtained using straightforward numerical methods show that when the damping constant α<1, coherent switching will sometimes occur well below the Stoner-Wohlfarth threshold. The amount of deviation which is significant over a wide range of experimentally observable parameters increases as α and the pulse rise time decrease. The deviation is due to the nonequilibrium condition which arises for small values of α pulse rise time. The final position is always the expected Stoner-Wohlfarth equilibrium position

Published in:

Magnetics, IEEE Transactions on  (Volume:30 ,  Issue: 6 )