Open AccessBand-structure calculations of two-dimesional magnonic crystals with plane-wave expansion method*
Author(s) -
Yongjun Cao,
Guohong Yun,
Narsu
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.077502
Subject(s) - plane wave expansion , condensed matter physics , plane wave expansion method , materials science , photonic crystal , field (mathematics) , plane wave , ferromagnetism , band gap , spin wave , electronic band structure , plane (geometry) , magnetic field , optics , physics , optoelectronics , quantum mechanics , geometry , mathematics , pure mathematics
Recently, magnonic crystals which are the magnetic counterparts of photonic crystals or phononic crystals are growing into a hot area of research. In this paper, a plane-wave expansion method in the field of magnonic crystals is proposed. By using this method, band structures of two-dimensional magnonic crystals composed of ferromagnetic materials Fe and EuO are calculated. The numerical results show that the spin-wave gaps will be generated under a definite filling fraction ratio, and the effect of exchange field on the band structure is larger than that of other field in the effective field.