Photonic crystals based on manganite-perovskite structure

1 Electrodynamical spectra of perovskite based photonic crystal with PBG has been studied experimentally and modelled theoretically. Transmission coefficients of such photonic crystal have been detected experimentally for two different thicknesses of dielectric slab forming the primary element of PC. The frequency shift of pass bands has been detected. 2 Using the experimentally obtained band structure of spectra of photonic crystal, the value of permittivity of manganite-perovskite sample La0.775Sr0.225MnO3 for the 20–40 GHz has been estimated for the case when the permeability tends to unit.