2005/05/16 by V. V. Kruglyak, R. J. Hicken, A. N. Kuchko +1 · 2 citations
Materials Science · Physics and Astronomy · #Magnetic properties of thin films #Multiferroics and related materials #Topological Materials and Phenomena #cond-mat.mtrl-sci #physics.ins-det
paper · pdf · doi:10.1063/1.1935764
published as J. Appl. Phys. 98, 014304 (2005) · 15 pages, 3 figures; submitted to Journal of Applied Physics
arxiv created 2005/05/16 · openalex publication_date 2005/06/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report a simple theoretical derivation of the spectrum and damping of spin waves in a cylindrical periodically structured magnetic nanowire (cylindrical magnonic crystal) in the “effective-medium” approximation. The dependence of the “effective” magnetic parameters upon the individual layer parameters is shown to be different from the arithmetic average over the volume of the superlattice. The formulas that are obtained can be applied firstly in the description of spin-wave dispersion in the first allowed band of the structure and secondly in the design of a magnonic crystal with band gaps in an arbitrary part of the spin-wave spectrum.