| PZT基陶瓷铁电－反铁电相界处各向异性的研究 |
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| 引用本文： | 董显林,孙大志,王永令.PZT基陶瓷铁电－反铁电相界处各向异性的研究[J].无机材料学报,1995(2). |
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| 作者姓名： | 董显林 孙大志 王永令 |
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| 作者单位： | 中国科学院上海硅酸盐研究所无机功能材料开放实验室 |
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| 摘 要： | 本文研究了两个以ＰＺＴ瓷为基的系统：ＰＺＴ（Ｎｂ）和ＰＳＺＴ陶瓷在铁电－反铁电相界区域的压电和机电耦合等性能．结果表明，ＰＺＴ基陶瓷在该相界处具有高Ｋｔ和低Ｋｐ的性质．压电和机电耦合各向异性也比准同型相界要高，｜ｄ３３／ｄ３１｜＞５．５，Ｋｔ／Ｋｐ＞３．０．借助于电场诱导ＡＦ—Ｆ相变和反铁电双子晶格间的强耦合作用，对此现象作了较好解释．
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| 关 键 词： | PZT，陶瓷，铁电－反铁电相界，各向异性 |
The Studies on Piezoelectric Anisotropies of PZT-based Ceramics Near Ferroelectric-Antiferroelectric Phase Boundary |
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| Dong Xianlin, Sun Dazhi, Wang Yongling.The Studies on Piezoelectric Anisotropies of PZT-based Ceramics Near Ferroelectric-Antiferroelectric Phase Boundary[J].Journal of Inorganic Materials,1995(2). |
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| Authors: | Dong Xianlin Sun Dazhi Wang Yongling |
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| Abstract: | The piezoelectric and eledromechanical coupling properties of two PZT-based ceramic systems including PZT(Nb) and PSZT families in the region of ferroelectric-antiferroelectric phace boundary were studied. The research results showed that PZT-bssed ceramics presented the feature of high Kt and low Kp st this phase boundary, and their piezoelectric and electromechanical coupling anisotropies were larger than that at the morphotropic phase boundary. | d33/d31 |>5.5, Kt/Kp >3.0. An explanation of this phenomenon was made with the aid of electric field-induced AF-F phase transition and strong coupling effect of two-sublattice in atiferroelectric unit cell. |
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| Keywords: | PZT ceramics ferroelectric-antiferroelectric phase boundary anisotropy |
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