On the Formulation of the Exchange Field in the Landau-Lifshitz Equation for Spin-Wave Calculation in Magnonic Crystals
Figure 5
(a) Magnonic band structure calculated for three different definitions of the exchange field for 2D MC. The MC is composed of Co dots in square lattice and immersed in Py matrix. The film has a thickness of 4 nm, the lattice constant is 30 nm, and diameter of dots is 14 nm. (b) Modulus of the dynamical component of the magnetization vector calculated for the wave vector from the center of the BZ. The profiles shown are calculated for Form II and Form I of the exchange field.
