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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.
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
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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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