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Title | Spin excitations in a Ferromagnetic Nanorice-type Cluster |
Authors |
Gorobets, Yu.I.
Kulish, V.V. |
ORCID | |
Keywords |
composite nanostructure nanoshell nanorice spin excitation dipole-exchange theory |
Type | Conference Papers |
Date of Issue | 2015 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/42784 |
Publisher | Sumy State University |
License | |
Citation | Gorobets, Yu.I. Spin Excitations in a Ferromagnetic Nanorice-type Cluster [Текст] / Yu.I. Gorobets, V.V. Kulish // Nanomaterials: Applications & Properties (NAP-2015) : Proceedings of the International Conference. — Sumy : Sumy State University, 2015. — V.4, No1. — 01MFPM07. |
Abstract |
In the paper, dipole-exchange spin excitations in a composite nanorice-type nanoparticle (prolate rotation ellipsoid) are investigated theoretically. A nanorice with a non-magnetic core and a shell composed of an uniaxial ferromagnet is considered. Spin dynamics in the above-described nanosystem is described using the linearized Landau-Lifshitz equation (in the magnetostatic approximation) with the addends that
consider the magnetic dipole-dipole interaction, the exchange interaction and the anisotropy effects. An equation for the magnetic potential of the above-described spin excitations is obtained. For the case of a thin shell, a solution for the above-mentioned equation in the form of a combination of the generalized spheroidal functions is proposed. For the above-described case, a dispersion relation for such spin excitations
is also found. |
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