Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
5
From page :
97
To page :
101
Abstract :
We study how a magnetic field step triggers the precessional switching of the magnetization in an isotropic thin film. Using a variational approach, we make an analytical estimate of the switching frequency. We compare it to more general analytical models, and to the results obtained numerically by direct integration of the equations of motion. We show that the periodic motions of the three magnetization components can be described satisfactorily with truncated Fourier expansions, indicating a relatively high spectral purity of the magnetic response. Our analytical expressions are simple enough to be physically transparent at first sight, in contrast to the results of the more elaborate models that treat also anisotropy.
Journal title :
Acta Tropica
Serial Year :
2004
Journal title :
Acta Tropica
Record number :
1748070
Link To Document :
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