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Research Article | Open Access

A new insight into structural complexity in ferroelectric ceramics

Weidong ZENGa, Qingning LIa, Changrong ZHOUa( ), Jiwen XUa, Changlai YUANa, Guohua CHENa
School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
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Abstract

The structure of the ferroelectrics has been widely studied in order to pursuing the origin of high electromechanical responses. However, some experiments on structure of ferroelectrics have yielded different results. Here, we report that the controversial phase structure is due to the adaptive diffraction of nanodomains which hides the natural crystal structure, and the electric-field-induced phase transition is that the natural crystal structure reappears due to the coalescent nanodomains or ordering nanodomains by applying a high electric field. The temperature dependence of dielectric constant with different measurement frequencies and X-ray diffraction (XRD) patterns of unpoled, poled, and annealing after poled ceramics in Bi0.5Na0.5TiO3-BaTiO3 (BNT-BT) ceramics authenticate the statement. These results provide a new insight into the origin of structural complexity in ferroelectric ceramics, which is related to the key role of nanodomains.

Keywords

crystal structureadaptive diffractionferroelectricityphase transitions

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Journal of Advanced Ceramics
Volume 6 Issue 3,
September 2017
Pages 262-268
DOI: 10.1007/s40145-017-0237-1
Cite this article:
ZENG W, LI Q, ZHOU C, et al. A new insight into structural complexity in ferroelectric ceramics. Journal of Advanced Ceramics, 2017, 6(3): 262-268. https://doi.org/10.1007/s40145-017-0237-1

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Received: 18 March 2017
Revised: 04 June 2017
Accepted: 09 June 2017
Published: 29 September 2017
© The author(s) 2017

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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