Contribution to the large and stable electric field induced strain for textured Pb(Mg1/3Nb2/3)0.675Ti0.325O3 ceramics
Contribution to the large and stable electric field induced strain for textured Pb(Mg1/3Nb2/3)0.675Ti0.325O3 ceramics
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DOI：
10.1063/1.4960520
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发表时间：
2016-08
影响因子：
4
通讯作者：
Jiangtao Zeng;K. Zhao;W. Ruan;Xuezheng Ruan;Liaoying Zheng;Guorong Li
中科院分区：
文献类型：
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作者：
Jiangtao Zeng;K. Zhao;W. Ruan;Xuezheng Ruan;Liaoying Zheng;Guorong Li
以3%片状BaTiO 3为模板，采用模板晶粒生长法制备了Pb（Mg 1/3 Nb 2/3）0.675Ti 0.325O3（PMN-PT）织构陶瓷。由XRD图谱计算出晶粒取向度约为81%。测量了未织构和织构PMN-PT陶瓷的电场诱导应变的温度依赖性。结果表明，在较宽的温度范围内，织构化PMN-PT陶瓷的电场诱导应变比未织构化PMN-PT陶瓷的电场诱导应变大得多，且更稳定。分析了压电效应和电致伸缩效应对应变的贡献，发现织构化PMN-PT陶瓷的电致伸缩系数Q33高达5.19 × 10−2 m4 C−2，与PMN-PT单晶相当。电致伸缩效应是织构PMN-PT陶瓷电场诱导应变增强的主要原因。
Textured Pb(Mg1/3Nb2/3)0.675Ti0.325O3 (PMN-PT) ceramics were prepared by the templated grain growth method with 3% plate-like BaTiO3 as templates. The degree of grain orientation was about 81% by calculating from the XRD pattern. Temperature dependence of electric field induced strain was measured for both untextured and textured PMN-PT ceramics. The results show that the electric field induced strain for textured PMN-PT ceramics is much larger and more stable than that for untextured PMN-PT ceramics in a wide temperature range. The contribution from the piezoelectric effect and electrostrictive effect to the strain was analyzed, and it was found that textured PMN-PT ceramics exhibited electrostrictive coefficient Q33 as high as 5.19 × 10−2 m4 C−2 and it was comparable to that of PMN-PT single crystals. The electrostrictive effect contributed the main part of the enhancement of electric field induced strain for textured PMN-PT ceramics.