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Materials 2015, 8(11), 7962-7978;

Growth and Characterization of Lead-free Piezoelectric Single Crystals

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Unité Propre de Recherche (UPR) 9048, Centre National de la Recherche Scientifique (CNRS), Pessac F-33600, France
ICMCB, UPR 9048, Université de Bordeaux, Pessac F-33600, France
Author to whom correspondence should be addressed.
Academic Editor: Lorena Pardo
Received: 15 September 2015 / Revised: 30 October 2015 / Accepted: 10 November 2015 / Published: 24 November 2015
(This article belongs to the Special Issue Piezoelectric Materials)
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Lead-free piezoelectric materials attract more and more attention owing to the environmental toxicity of lead-containing materials. In this work, we review our first attempts of single crystal grown by the top-seeded solution growth method of BaTiO3 substituted with zirconium and calcium (BCTZ) and (K0.5Na0.5)NbO3 substituted with lithium, tantalum, and antimony (KNLSTN). The growth methodology is optimized in order to reach the best compositions where enhanced properties are expected. Chemical analysis and electrical characterizations are presented for both kinds of crystals. The compositionally-dependent electrical performance is investigated for a better understanding of the relationship between the composition and electrical properties. A cross-over from relaxor to ferroelectric state in BCTZ solid solution is evidenced similar to the one reported in ceramics. In KNLSTN single crystals, we observed a substantial evolution of the orthorhombic-to-tetragonal phase transition under minute composition changes. View Full-Text
Keywords: crystal growth; lead-free materials; piezoelectrics crystal growth; lead-free materials; piezoelectrics

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MDPI and ACS Style

Veber, P.; Benabdallah, F.; Liu, H.; Buse, G.; Josse, M.; Maglione, M. Growth and Characterization of Lead-free Piezoelectric Single Crystals. Materials 2015, 8, 7962-7978.

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