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2013 | 123 | 4 | 695-703
Article title

Magnetic Excitations in Locally Non-Equilibrium Continuum

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EN
Abstracts
EN
On the basis of locally non-equilibrium thermodynamics the equation for dynamics of the magnetic moment vector is derived. For a magneto disordered continuum the spectrum of locally non-equilibrium fluctuations is determined. It is shown that the spectrum is composed of electromagnetic-spin branches, which contain energy gaps and spin-electromagnetic ones which do not. Unstable modes in diamagnets are found. The dispersion relation and frequency dependence of the damping coefficient are determined for coupled waves of the magnetic vector potential and magnetization. It is shown that there exist frequency regions of transmission and non-transmission. Frequencies of the undamped waves and constant-phase damped waves can be located in these regions.
Keywords
EN
Publisher

Year
Volume
123
Issue
4
Pages
695-703
Physical description
Dates
published
2013-04
received
2012-03-21
(unknown)
2013-01-25
Contributors
  • Fryazino Filial of V.A. Kotel'nikov Institute of Radioengineering and Electronics of RAS, Vvedensky sq. 1, Fryazino, Moscow region, 141190, Russia
References
  • 1. A.G. Gurevich, G.A. Melkov, Magnetization Oscillations and Waves, CRC-Press, London 1996
  • 2. A.F. Kabychenkov, Bull. Rus. Acad. Sci. Phys. 74, 1376 (2010)
  • 3. A.F. Kabychenkov, Techn. Phys. 54, 1116 (2009)
  • 4. S.R. de Groot, P. Mazur, Non-Equilibrium Thermodynamics, North-Holland, Amsterdam 1962
  • 5. I. Gyarmati, Non-Equilibrium Thermodynamics, Springer-Verlag, Berlin 1970
  • 6. L.D. Landau, E.M. Lifshits, Electrodynamics of Continuous Media, Pergamon, New York 1992
  • 7. S.V. Vonsovskii, Magnetism, Wiley, 1974
  • 8. A.F. Kabychenkov, in: Proc. IV Int. Symp. on Surface Waves in Solid and Layered Structures, Eds. Yu.V. Gulyaev, Zh.I. Alferov, St. Petersburg State University of Aerospace Instrumentation, St. Petersburg 1998, p. 83
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv123n410kz
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