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Effect of SrTiO3 template on electric properties of textured BNT-BKT ceramics prepared by templated grain growth process
Bai W.; Li L.; Li W.; Shen B.; Zhai J.; Chen H.
2014
Source PublicationJournal of Alloys and Compounds
ISSN9258388
Volume603Pages:149
Abstract

In this work, 〈0 0 l〉 textured lead-free piezoelectric (1-x)(0.83 Bi0.5Na0.5TiO3-0.17Bi0.5K 0.5TiO3)-xSrTiO3 (BNT-BKT-xST) ceramics were fabricated by template grain growth in combination with tape casting using plate-like SrTiO3 as a template. The effect of ST template on the grain orientation, strain behavior, dielectric, ferroelectric, pyroelectric and piezoelectric properties was systematically investigated in order to search the lead-free piezoelectric materials with an excellent actuating performance. The templated growth of 〈0 0 l〉 oriented grains on the ST template resulted in textured ceramics with brick wall microstructures and significantly high 〈0 0 l〉 texture degree corresponding to >90% Lotgering factor at 9-15 mol% ST template. Textured ceramics showed excellent strain properties as compared to the random counterparts and encouraging results of large strain of 0.38% with normalized strain Smax/Emax = 626 pm/V for the textured critical composition with 15 mol% ST template were obtained at room temperature. Furthermore, the textured ceramics with 27 mol% ST template exhibited large electrostrictive coefficient Q11 of 0.023 m 4 C-2 and superior temperature stability compared to the random counterparts, which are very promising and makes them tremendous potential for the environmental-friendly solid-state actuator applications. © 2014 Elsevier B.V. All rights reserved.

Keyword(Bi0.5na0.5)Tio3 Ceramics Electrostriction Lead-free Ceramics Templated Grain Growth
DOI10.1016/j.jallcom.2014.03.033
URLView the original
Language英語English
WOS IDWOS:000335505100023
The Source to ArticleScopus
Scopus ID2-s2.0-84898070119
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Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Bai W.,Li L.,Li W.,et al. Effect of SrTiO3 template on electric properties of textured BNT-BKT ceramics prepared by templated grain growth process[J]. Journal of Alloys and Compounds, 2014, 603, 149.
APA Bai W.., Li L.., Li W.., Shen B.., Zhai J.., & Chen H. (2014). Effect of SrTiO3 template on electric properties of textured BNT-BKT ceramics prepared by templated grain growth process. Journal of Alloys and Compounds, 603, 149.
MLA Bai W.,et al."Effect of SrTiO3 template on electric properties of textured BNT-BKT ceramics prepared by templated grain growth process".Journal of Alloys and Compounds 603(2014):149.
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