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A Ferromagnetic Resonance Numerical Computation Method of Ferromagnetic Nano-Sphere

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Abstract:

We have studied the approach for dynamic micromagnetic equilibrium conditions (Brown’s equations) in terms of nucleation theory provide micromagnetic solutions for linearized forms of the equilibrium equations. We focus on the case of ferromagnetic resonance here described for a ferromagnetic sphere with uniform magnetization and with no losses. With the linear approximation we have derived uniform and symmetric resonance mode to the micromagnetic equations describing the dynamic properties of the near single-domain states by ignoring the magnetostatic potential gradient in symmetric case. Moreover, using numerical integration solution to calculate exchange and magnetic energy, both resonance modes are proved to be effective approximate solution of Brown’s equations in the nanometer range.

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Periodical:

Advanced Materials Research (Volume 643)

Pages:

157-161

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.643.157

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Online since:

January 2013

Authors:

Xin Wang, Li Zhang, Meng Ran Guan, Jian Liang Xie, Long Jiang Deng

Keywords:

Micromagnetics, Nano-Sphere, Numerical Computation

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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