Сибирский федеральный университет

Перевод названия: ВЫСОКОЧАСТОТНАЯ ВОСПРИИМЧИВОСТЬ МНОГОСЛОЙНОЙ ФЕРРОМАГНИТНОЙ СИСТЕМЫ С ДВУМЕРНЫМИ НЕОДНОРОДНОСТЯМИ

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.1134/S1063783410030157

Аннотация: This paper reports on the results of the investigation of the high-frequency susceptibility of a layered ferromagnetic structure in which, apart from a periodic change in the magnetic anisotropy parameter from layer to layer, this parameter varies along layers according to a random law (the superlattice with two-dimensional phase inhomogeneities). The evolution of the frequency dependence of the imaginary part of the averaged Green's function in the range of the energy gap (band gap) in the spectrum of waves propagating along the superlattice axis due to the change in the relative root-mean-square fluctuations of the phase gamma 2 has been studied at the boundaries of the odd Brillouin zones. It has been found that, for all odd Brillouin zones, the imaginary part of the Green's function exhibits a universal behavior: the peak corresponding to the edge of the band gap with a lower frequency remains unchanged, and the peak corresponding to the edge of the band gap with a higher frequency is smoothed with an increase in the quantity gamma(2). These effects, which were initially revealed at the boundary of the first Brillouin zone of the sinusoidal superlattice, have been explained, as before, by the specific features of the energy conservation laws for the incident and scattered waves in the lattice with two-dimensional inhomogeneities. It has been demonstrated that an increase in the Brillouin zone number leads to a decrease in the value of gamma(2) at which the peak at the edge of the band gap with a higher frequency disappears.

Журнал: PHYSICS OF THE SOLID STATE

Выпуск журнала: Vol. 52, Is. 3

Номера страниц: 544-553

ISSN журнала: 10637834

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

• Mankov Y.I. (Siberian Federal University)
• Tsikalov D.S. (Kirensky Institute of Physics,Siberian Branch,Russian Academy of Sciences)

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