Piezoelectric Ceramics in the PbSnO3–Pb(Mg1/3Nb2/3)O3–PbTiO3 Ternary System
Piezoelectric Ceramics in the PbSnO3–Pb(Mg1/3Nb2/3)O3–PbTiO3 Ternary System
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DOI：
10.1111/j.1551-2916.2011.04857.x
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发表时间：
2011-11
影响因子：
3.9
通讯作者：
Dawei Wang;M. Cao;Shujun Zhang
中科院分区：
文献类型：
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作者：
Dawei Wang;M. Cao;Shujun Zhang
合成了（0.8−x）PbSnO 3 -0.2Pb（Mg 1/3 Nb 2/3）O3-xPbTiO 3（PSn-PMN-PT，x = 0.42-0.47）三元系压电陶瓷。通过X射线衍射、介电、压电和铁电性能证实了位于~PT = 0.43-0.45处的准同型相界（MPB）成分。发现矫顽场EC、内部偏置场Ei和机械品质因数Qm随着PT含量的增加而增加，指示压电“硬化”特性，而MPB组合物0.36PSn-0.2PMN-0.44PT实现了最佳介电和压电性质，其中介电常数er，压电系数d33，平面机电耦合kp分别为2930、510 pC/N和55%。此外，还研究了压电陶瓷的老化行为，其老化速率分别为d33 ~− 6%，kp ~− 2%，er ~−7%/10，与商业PZT 4陶瓷相近。
Piezoelectric ceramics in the ternary system (0.8−x)PbSnO3–0.2Pb(Mg1/3Nb2/3)O3–xPbTiO3 (PSn–PMN–PT, x = 0.42–0.47) were synthesized. Morphotropic phase boundary (MPB) compositions, located at ~PT = 0.43–0.45 were confirmed by X-ray diffraction, dielectric, piezoelectric, and ferroelectric properties. The coercive field EC, internal bias field Ei, and mechanical quality factor Qm were found to increase with increasing PT content, indicative of piezoelectric “hardening” characteristics, while the optimum dielectric and piezoelectric properties were achieved for the MPB composition 0.36PSn–0.2PMN–0.44PT, with dielectric permittivity er, piezoelectric coefficient d33, and planar electromechanical coupling kp being on the order of 2930, 510 pC/N and 55%, respectively. In addition, the aging behavior of the piezoelectric ceramics was studied, with aging rate of d33 ~−6%, kp ~−2%, er ~−7% per decade, respectively, similar to commercial PZT4 ceramics.