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Temperature dependence of the local piezoresponse in (K,Na)NbO3-based ceramics with large electromechanical strain

Gobeljic, Danka and Shvartsman, Vladimir V. and Wang, Ke and Yao, Fangzhou and Li, Jing-Feng and Jo, Wook and Rödel, Jürgen and Lupascu, Doru C. (2014):
Temperature dependence of the local piezoresponse in (K,Na)NbO3-based ceramics with large electromechanical strain.
In: Journal of Applied Physics, pp. 066811(1-5), 116, (6), ISSN 0021-8979, [Online-Edition: http://dx.doi.org/10.1063/1.4891398],
[Article]

Abstract

We report on temperature dependence of local electromechanical properties of lead-free (K,Na)NbO3-based ceramics that macroscopically manifests a large temperature-insensitive strain. Piezoresponse force microscopy reveals the particular role of the orthorhombic-tetragonal phase transition, where a reconstruction of the domain structure occurs and local piezoelectric response shows a peak value. A good quantitative agreement between temperature dependences of the local and previously reported macroscopic small-signal piezoelectric coefficients is observed. An influence of the polymorphic phase transition on polarization switching kinetics was revealed.

Item Type: Article
Erschienen: 2014
Creators: Gobeljic, Danka and Shvartsman, Vladimir V. and Wang, Ke and Yao, Fangzhou and Li, Jing-Feng and Jo, Wook and Rödel, Jürgen and Lupascu, Doru C.
Title: Temperature dependence of the local piezoresponse in (K,Na)NbO3-based ceramics with large electromechanical strain
Language: English
Abstract:

We report on temperature dependence of local electromechanical properties of lead-free (K,Na)NbO3-based ceramics that macroscopically manifests a large temperature-insensitive strain. Piezoresponse force microscopy reveals the particular role of the orthorhombic-tetragonal phase transition, where a reconstruction of the domain structure occurs and local piezoelectric response shows a peak value. A good quantitative agreement between temperature dependences of the local and previously reported macroscopic small-signal piezoelectric coefficients is observed. An influence of the polymorphic phase transition on polarization switching kinetics was revealed.

Journal or Publication Title: Journal of Applied Physics
Volume: 116
Number: 6
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 12 Aug 2014 13:22
Official URL: http://dx.doi.org/10.1063/1.4891398
Identification Number: doi:10.1063/1.4891398
Funders: Danka Gobeljic acknowledges the support of the European Commission within FP7 Marie Curie Initial Training Network “Nanomotion” (Grant Agreement No. 290158).
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