Effective Landau-Lifshitz-Gilbert Equation for a Conducting Nanoparticle

Denysov, Stanislav Ivanovych; Babych, Hanna Valeriivna; Denysova, Liudmyla Anatoliivna; Peredriy, Ye.A.

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Title	Effective Landau-Lifshitz-Gilbert Equation for a Conducting Nanoparticle
Authors	Denysov, Stanislav Ivanovych Babych, Hanna Valeriivna Denysova, Liudmyla Anatoliivna Peredriy, Ye.A.
ORCID	http://orcid.org/0000-0001-9590-1001
Keywords	Ferromagnetic nanoparticles Eddy currents Magnetization dynamics Conduction effects
Type	Conference Papers
Date of Issue	2012
URI	http://essuir.sumdu.edu.ua/handle/123456789/35362
Publisher	Sumy State University
License	Copyright not evaluated
Citation	Effective Landau-Lifshitz-Gilbert Equation for a Conducting Nanoparticle / S. I. Denisov, H. V. Babych, L. A. Denisova, Y. A. Peredriy // Nanomaterials: Applications & Properties (NAP-2012) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2012. - V. 1, No4. - 04MFPN13
Abstract	We study the role of conductivity in the magnetization dynamics of single-domain ferromagnetic particles. Our approach is based on the coupled system of Maxwell’s and Landau-Lifshitz-Gilbert (LLG) equations that describes both the induced electromagnetic field and the magnetization dynamics. We show that the effective LLG equation for a conducting particle contains two additional terms compared to the ordinary LLG equation. One of these terms accounts for the magnetic field of eddy currents induced by an external magnetic field, and the other is magnetization dependent and is responsible for the conductivity contribution to the damping parameter. By analytically solving Maxwell’s equations, we determine this contribution and demonstrate the importance of conduction effects for large nanoparticles. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35362
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