Electrical Properties of PSZT Doped with Mn and Ce Elements

Abstract

Piezoelectric materials can convert between electric and stress and has been applied widely in industrial field. Lead strontium zirconate titanate (PSZT) ceramic, as one kind of piezoelectric material, shows good piezoelectric properties and has been used in making resonators, sensors etc. For further improving its piezoelectric properties, various elements have been doped into PSZT. In this paper, two kinds of oxides, MnO2 and CeO2, are doped into PSZT. The electrical properties of the doped PSZT samples are tested and the microstructures of samples are observed as well. Results show that, after doping 0.1wt% MnO2 and 0.1wt% CeO2, the electrical properties are enhanced to: d33=569pC/N, tgδ=0.94%, kp=0.632, ε=2882. It can also be found from SEM results that, as increasing the doping amount of MnO2, the grain size of samples increases, and by doping CeO2, results show reverse effect.