Temperature dependent poling behaviour of MnO₂ doped Pb[(Mn_1/3,Sb_2/3)_0·03(Zn_1/3,Nb_2/3)_0·15(Zr_1/2,Ti_1/2)_0·82]O₃ ceramics

Abstract

The temperature dependent poling behaviour of MnO₂ doped Pb[(Mn_1/3,Sb_2/3)_0·03(Zn_1/3,Nb_2/3)_0·15(Zr_1/2,Ti_1/2)_0·82]O₃ lead contain ceramics is investigated in this research. The piezoelectric constant d₃₃ value of the samples poled under 200°C can get to 358 pC N⁻¹. While the d₃₃ value of the samples poled under room temperature is only 102 pC N⁻¹. The piezoelectric constant d₃₃ value and strain level increase more than two times when samples are poled under 200°C. The internal bias field appears quite modest relative to the strain improvement. The origin of the internal bias field is discussed and a mathematical model is proposed to interpret the mechanism.

Keywords:

• Ferroelectric
• Hysteresis loops
• Internal bias field

Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSAF) under Grant No. U1230116.