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中文摘要：
探讨了Pr6O11掺杂对锑锰锆钛酸铅Pb（Mn1/3Sb2/3）0.05Zr0.47Ti0.48O3（lead antimony-manganese zirconate titanate,PMSZT）压电陶瓷温度稳定性的影响.测定和分析了样品的谐振频率fr,弹性柔顺系数S11E,相对介电常数εr,横向机电耦合系数K31,压电系数d31在-20～80℃之间随温度的变化.结果表明：与未掺杂的样品相比,掺杂适量Pr6O11的PMSZT陶瓷具有较低的Curie温度,而且体系的压电系数d31的温度稳定性较好,同时机电耦合系数K31的温度稳定性也得到了改善.当掺杂Pr6O11的质量分数为0.05%时,能得到机电性能优良的压电陶瓷,εr=1 650,tan δ=0.006,d33=350 pC/N,平面机电耦合系数Kp=0.67,机械品质因数Qm=2 000.
英文摘要：
Effects of Pr6O11 doping on the properties of Pb（Mn1/3Sb2/3）0.05Zr0.47Ti0.48O3 （lead antimony-manganese zirconate titanate, PMSZT） ceramics were studied. The resonance frequency fr, elastic compliance constant S11^E relative dielectric constant εr, transverse electromechanical coupling factor K31 and piezoelectric constant d31 of the PMSZT ceramics were measured as a function of temperature between -20℃ and 80℃. The results show that the temperature stability of properly doped piezoelectric ceramics is better than that for no dopant. The Curie temperature moves toward lower temperatures and the changes of resonant frequency are all positive with the increase of temperature when Pr6O11 additive is increased. A PMSZT ceramic with 0.05% in mass Pr6Oll doping and more excellent electric properties was obtained, including an er of 1 650, d33 of 350 pC/N, a planar electromechanical coupling factor Kpof0.67, and a mechanical quality factor Qm of 2 000.
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