Journal
SCRIPTA MATERIALIA
Volume 123, Issue -, Pages 64-68Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.06.002
Keywords
Ferroelectric ceramics; Piezoelectricity; Ferroelectric domains; Piezoresponse force microscopy
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Funding
- National Natural Science Foundation of China [61404085, 11574214, 61376010]
- Natural Science Foundation of Shanghai [14ZR1430400]
- Key Laboratory of Inorganic Functional Materials and Devices of Chinese Academy of Science [KLIFMD-2015-07]
- Guangxi Key Laboratory of Information Materials [131005-K]
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In order to clarify the nanoscale mechanism responsible for the large strain response in Bi0.5Na0.5TiO3-BaTiO3Sr-TiO3 (BNBST) reported in our previous work, the composition, electric-field and temperature induced domain evolution was investigated. Results indicated the increase of the SrTiO3 concentration led to the evolution from non-ergodic relaxor ferroelectric domain to ergodic relaxor state. The in-situ poling results indicated the transition from the ergodic relaxor to ferroelectric was induced under sufficient high electric field in BNBST with high strain response, which was suggested as the main reason for the large strain level. The temperature-dependent domain evolution was also characterized and discussed. (C) 2016 Elsevier Ltd. All rights reserved.
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