Micromagnetic modelling of the dynamics of exchange springs in multi-layer systems


Franchin, M., Zimmermann, J.P., Fischbacher, T., Bordignon, G., De Groot, P.A.J. and Fangohr, H. (2007) Micromagnetic modelling of the dynamics of exchange springs in multi-layer systems. IEEE Transactions on Magnetics, 43, (6), 2887-2889. (doi:10.1109/tmag.2007.892596).

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Original Publication URL: http://dx.doi.org/10.1109/tmag.2007.892596

Description/Abstract

Exchange springs are formed in multilayers of alternating hard and soft ferromagnetic materials which are exchange coupled at their interfaces. These systems are rich of interesting physical properties, which can be tuned by selecting suitable geometries and compositions. In this paper, we present a computational study of the dynamics of a tri-layer DyFe2/YFe2/DyFe2 exchange spring system near the bending field (the field required to twist the magnetization of the soft YFe2 layer out of the aligned state). The dynamical reaction of the system to small variations of the applied field is studied and its oscillatory nature is analyzed numerically. The behaviors of the decay times, the frequencies, and amplitudes reveal enhanced responses of the system near the bending field

Item Type: Article
ISSNs: 0018-9464 (print)
Related URLs:
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Physics and Astronomy
ePrint ID: 57256
Date Deposited: 07 Aug 2008
Last Modified: 27 Mar 2014 18:39
URI: http://eprints.soton.ac.uk/id/eprint/57256

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