2005/08/17 by M. Krawczyk, Maciej Krawczyk, Krawczyk, M. +2
Engineering · Materials Science · Physics and Astronomy · #Advanced Materials and Mechanics #Advanced Mathematical Theories and Applications #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Other Condensed Matter (cond-mat.other) #Quasicrystal Structures and Properties #cond-mat.mtrl-sci #cond-mat.other
paper · pdf · doi:10.48550/arxiv.cond-mat/0508390
12 pages, 3 figures, submitted to Crystal Research and Technology
arxiv created 2005/08/17 · openalex publication_date 2005/08/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
This study deals with the spin wave spectrum in magnetic macrostructure (composed of two ferromagnetic materials) showing a 3D periodicity: spherical ferromagnetic grains disposed in the nodes of a simple cubic crystal lattice are embedded in a matrix with different ferromagnetic properties. It is shown that the magnonic spectrum of this composite structure exhibits frequency regions forbidden for magnon propagation, and the energy gaps are found to be sensitive to the exchange contrast between the constituent materials as well as to the magnetization contrast. The widths of the respective magnonic gaps are studied as functions of parameters characterizing the magnetic structure.