Figure 3
From: Magnonic band structure investigation of one-dimensional bi-component magnonic crystal waveguides
Bandgap diagram with respect to M/a under applied field H = 600 mT. With a (=M + N) = 20 nm for transversely magnetized (a) M Fe/N Ni, (b) M Fe/N Py, (c) M Py/N Ni, (d) M Co/N Ni, (e) M Co/N Py, and M Co/N Fe MCWs. The gray region represents the allowed bands, while the red, green, and blue regions, the respective first, second, and third forbidden bands.