Fig. 10
a Dielectric constants (εr) and b dielectric losses (tanδ) of the PTO powders synthesized by MSS method and template MSS method. Samples (a) and (b) were synthesized by MSS method at 950 °C for 5 h with the molar ratios of PbC2O4:TiO2:NaCl:KCl equal to 1:1:30:30 and 1:1:60:60, respectively. Samples (c) and (d) were synthesized by template MSS method with the molar ratio of PbC2O4:TiO2 (rod-like template):NaCl:KCl equal to 1:1:60:60 and annealed 800 °C for 5 h and 10 h, respectively