Ceramic materials based on complex oxides with both the perovskite structure (Ln2/3Nb2O6) and the structure of tetragonal tungsten bronze (Ba6-xLn8+2x/3Ti18O54) have been investigated over a wide frequency and temperature ranges. The results obtained for certain structures denote the presence of the temperature anomalies of dielectric parameters (ε. tanδ). These anomalie... https://www.roneverhart.com/Essential-Sport-by-Lacoste/