Fig xA Effect of annealing temperature
The Curie temperature of the manganese-modified NLBT is higher than that CA-074 Me of the pure NLBT. This finding indicates that manganese modification increases the Curie temperature Tc. The dielectric loss tan δ is also very low, especially at temperatures lower than 400 °C. The manganese-modified NLBT ceramics have decreased dielectric loss tan δ within the temperature range of RT to 500 °C, compared with the pure NLBT.