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Structural investigations on lead-free Bi1/2Na1/2TiO3-based piezoceramics

Schmitt, Ljubomira A. and Kling, Jens and Hinterstein, Manuel and Hoelzel, Markus and Jo, Wook and Kleebe, Hans-Joachim and Fuess, Hartmut (2011):
Structural investigations on lead-free Bi1/2Na1/2TiO3-based piezoceramics.
In: Journal of Materials Science, pp. 4368-4376, 46, (12), ISSN 0022-2461, [Online-Edition: http://dx.doi.org/10.1007/s10853-011-5427-6],
[Article]

Abstract

In this study, recent results from our electron, X-ray, and neutron-diffraction experiments with emphasis on the binary Bi1/2Na1/2TiO3-BaTiO3 (BNT–BT) and ternary Bi1/2Na1/2TiO3–BaTiO3–K0.5Na0.5NbO3 (BNT–BT–KNN) system are presented and contrasted with literature. The experimental results clearly revealed a phase coexistence on the nanoscale level. A systematic study of superlattice reflections in conjunction with microstructural characteristics showed that the BNT-based systems have specific properties in common, which, however, strongly depend on composition. In situ transmission electron microscopy (TEM) electric field experiments unequivocally demonstrated the evolution of lamellar domains. Combining in situ TEM results with published in situ neutron-diffraction experiments, we proposed an electric field-induced phase transition that results in the giant unipolar and bipolar strain observed in specific compositions of the ternary system.

Item Type: Article
Erschienen: 2011
Creators: Schmitt, Ljubomira A. and Kling, Jens and Hinterstein, Manuel and Hoelzel, Markus and Jo, Wook and Kleebe, Hans-Joachim and Fuess, Hartmut
Title: Structural investigations on lead-free Bi1/2Na1/2TiO3-based piezoceramics
Language: English
Abstract:

In this study, recent results from our electron, X-ray, and neutron-diffraction experiments with emphasis on the binary Bi1/2Na1/2TiO3-BaTiO3 (BNT–BT) and ternary Bi1/2Na1/2TiO3–BaTiO3–K0.5Na0.5NbO3 (BNT–BT–KNN) system are presented and contrasted with literature. The experimental results clearly revealed a phase coexistence on the nanoscale level. A systematic study of superlattice reflections in conjunction with microstructural characteristics showed that the BNT-based systems have specific properties in common, which, however, strongly depend on composition. In situ transmission electron microscopy (TEM) electric field experiments unequivocally demonstrated the evolution of lamellar domains. Combining in situ TEM results with published in situ neutron-diffraction experiments, we proposed an electric field-induced phase transition that results in the giant unipolar and bipolar strain observed in specific compositions of the ternary system.

Journal or Publication Title: Journal of Materials Science
Volume: 46
Number: 12
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A1: Manufacturing of ceramic, textured actuators with high strain
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B3: Structure Characterization of Piezoelectric Ceramics With Respect to Electrical Fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 18 May 2011 15:20
Official URL: http://dx.doi.org/10.1007/s10853-011-5427-6
Additional Information:

SFB 595 Cooperation A1, B3

Identification Number: doi:10.1007/s10853-011-5427-6
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