NDLI: The stress-assisted enhancement of piezoelectric properties due to mechanically incompatible domain structures in BaTiO3

Content Provider	IEEE Xplore Digital Library
Author	Sluka, T. Damjanovic, D. Tagantsev, A. Colla, E. Mtebwa, M. Setter, N.
Copyright Year	2010
Description	Author affiliation: Ceramics Laboratory, Swiss Federal Institute of Technology, Lausanne, CH-1015 Switzerland (Sluka, T.; Damjanovic, D.; Tagantsev, A.; Colla, E.; Mtebwa, M.; Setter, N.)
Abstract	The piezoelectric properties of tetragonal BaTiO3 (BTO) crystals with a high density of 90° twin domain boundaries were experimentally investigated by Wada and Tsurumi (2004 Br. Ceram. Trans. 103 93). These crystals with engineered dense domain structures exhibit significantly larger intrinsic d33 and d31 coefficients than in mono-domain crystals. This phenomena was studied theoretically and several enhancement mechanisms (domain wall broadening, polarization tilting) were suggested in the past, but no satisfactory explanation was found. We present a model which incorporates the additional effect of stress-assisted phase transition in elastically incompatible domain structures of BTO. According to our results, the internal stress, existing in [101] poled tetragonal BTO, shifts the system closer to the 4mm-mm2 phase transition, and the latter leads to the enhancement of macroscopic piezoelectric properties. The domain structure and effective properties of the BTO crystal are analyzed with phase field simulation based on Ginzburg-Landau-Devonshire theory.
Starting Page	1
Ending Page	4
File Size	1614936
Page Count	4
File Format	PDF
ISBN	9781424481903
ISSN	10994734
e-ISBN	9781424481910
DOI	10.1109/ISAF.2010.5712237
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-09
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Crystals Stress Mathematical model Periodic structures Equations Piezoelectricity
Content Type	Text
Resource Type	Article

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