On the Formulation of the Exchange Field in the Landau-Lifshitz Equation for Spin-Wave Calculation in Magnonic Crystals
Figure 3
Magnonic band structures calculated for three different definitions of the exchange field (as defined in (35)-(36)) for a thin slab of the considered 1D MC. The structure of the MC is schematically shown in the inset; stripes of Co and Py with the same width are arranged periodically with the lattice constant 500 nm. Very weak external magnetic field, T, is directed along stripes. The magnetostatic interaction determine, the magnonic band structure—the definition of the is unimportant.
