Chemical composition-structure-properties relations in a series of SrxBa1-xNb2O6 compounds

Based on structural studies of Sr x Ba1-x Nb2O6 crystals with different concentrations of strontium and barium, the structural causality of optical nonlinearity of these crystalline materials is established. YAG:Nd laser radiation of the crystals results in a monotonic decrease in the second harmonic intensity with increasing strontium concentration in a sample. Fine details of the structure responsible for this effect are determined.