Calculated maximal widths of the first three bandgaps. (a) Magnetic parameter contrasts between component materials in the MCWs, which are arranged in order of decreasing exchange constant ratio. The dashed line represents the contrast ratio equal to 1. Maximal widths of the magnonic bandgap for (b) transversely and (c) longitudinally magnetized MCWs of all the considered material combinations under applied field H = 600 mT.
Ma et al. Nanoscale Research Letters 2012 7:498 doi:10.1186/1556-276X-7-498