The microstructure and piezoelectric properties of Pb[(Zr0.52Ti0.48)0.95(Mn1/3Nb2/3)0.05]03(PMnN-PZT)ceramics have been investigated at different sintering temperatures from 1070℃to 1280℃.The experimental results su...The microstructure and piezoelectric properties of Pb[(Zr0.52Ti0.48)0.95(Mn1/3Nb2/3)0.05]03(PMnN-PZT)ceramics have been investigated at different sintering temperatures from 1070℃to 1280℃.The experimental results suggest that grain sizes and electromechanical properties of the ceramics show strong sintering temperature dependences.Double polarization to electric field(P-E)loops of the PMnN-PZT ceramics are assumed to be the result of the pinning effect of the defect dipoles.The results obtained through X-ray photoelectron spectrum suggest that sintering temperature affects valence of the Mn ion and quantity of oxygen vacancies.Hence,a proper explanation is proposed to illustrate the fluctuation of mechanical quality factor(Qm)due to the sintering temperature.展开更多
基金The authors acknowledge financial support of the National 863 Project of China under grant No.2001AA325030.
文摘The microstructure and piezoelectric properties of Pb[(Zr0.52Ti0.48)0.95(Mn1/3Nb2/3)0.05]03(PMnN-PZT)ceramics have been investigated at different sintering temperatures from 1070℃to 1280℃.The experimental results suggest that grain sizes and electromechanical properties of the ceramics show strong sintering temperature dependences.Double polarization to electric field(P-E)loops of the PMnN-PZT ceramics are assumed to be the result of the pinning effect of the defect dipoles.The results obtained through X-ray photoelectron spectrum suggest that sintering temperature affects valence of the Mn ion and quantity of oxygen vacancies.Hence,a proper explanation is proposed to illustrate the fluctuation of mechanical quality factor(Qm)due to the sintering temperature.
