Propagation Effects in the Spin-Wave Spectrum of the Ferromagnetic Thin Film

Figure 5

Two regions in the SBZ for sc(001) surface cut, with normal () and reverse () mode order in the spin-wave spectrum, for (a) ferromagnetic and (b) antiferromagnetic NNN interactions. The boundary between the regions shifts with growing towards the SBZ center as shown by blue curves. For the critical value the reversal domain does not occur (its boundary amounts to points and in (a) and (b), resp.).

(a)

(b)