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Electric-field-induced phase-change behavior in (Bi0.5Na0.5)TiO3–BaTiO3–(K0.5Na0.5)NbO3: A combinatorial investigation

Daniels, John E. and Jo, Wook and Rödel, Jürgen and Honkimäki, Veijo and Jones, Jacob L. (2010):
Electric-field-induced phase-change behavior in (Bi0.5Na0.5)TiO3–BaTiO3–(K0.5Na0.5)NbO3: A combinatorial investigation.
In: Acta Materialia, pp. 2103-2111, 58, (6), ISSN 13596454,
[Online-Edition: http://dx.doi.org/10.1016/j.actamat.2009.11.052],
[Article]

Abstract

The electric-field-induced strain behavior in (1 − x − y)(Bi0.5Na0.5)TiO3–xBaTiO3–y(K0.5Na0.5)NbO3 electroceramics has been studied using a combinatorial technique. A stoichiometrically graded sample was produced to contain compositions across the ternary phase diagram between the two end-member components of 0.93(Bi0.5Na0.5)TiO3–0.07BaTiO3 and 0.86(Bi0.5Na0.5)TiO3–0.14(K0.5Na0.5)NbO3. Both composition and structural information were measured simultaneously during the application of electric fields using secondary X-ray fluorescence and high-energy X-ray microdiffraction, respectively. An initial electric-field-induced distortion from the pseudo-cubic structure is seen across all compositions, while those with a greater concentration of BaTiO3 also undergo an electric-field-induced phase transformation. The microstructural contribution to the macroscopic strain within the 0.93(Bi0.5Na0.5)TiO3–0.07BaTiO3 end member is quantified at a field strength of 5.5 kV mm−1; 0.08% and 0.11% of the measured macroscopic strain of 0.4% is contributed by the induced ferroelastic domain texture and the volumetric strain associated with the electric-field-induced phase transformation, respectively.

Item Type: Article
Erschienen: 2010
Creators: Daniels, John E. and Jo, Wook and Rödel, Jürgen and Honkimäki, Veijo and Jones, Jacob L.
Title: Electric-field-induced phase-change behavior in (Bi0.5Na0.5)TiO3–BaTiO3–(K0.5Na0.5)NbO3: A combinatorial investigation
Language: German
Abstract:

The electric-field-induced strain behavior in (1 − x − y)(Bi0.5Na0.5)TiO3–xBaTiO3–y(K0.5Na0.5)NbO3 electroceramics has been studied using a combinatorial technique. A stoichiometrically graded sample was produced to contain compositions across the ternary phase diagram between the two end-member components of 0.93(Bi0.5Na0.5)TiO3–0.07BaTiO3 and 0.86(Bi0.5Na0.5)TiO3–0.14(K0.5Na0.5)NbO3. Both composition and structural information were measured simultaneously during the application of electric fields using secondary X-ray fluorescence and high-energy X-ray microdiffraction, respectively. An initial electric-field-induced distortion from the pseudo-cubic structure is seen across all compositions, while those with a greater concentration of BaTiO3 also undergo an electric-field-induced phase transformation. The microstructural contribution to the macroscopic strain within the 0.93(Bi0.5Na0.5)TiO3–0.07BaTiO3 end member is quantified at a field strength of 5.5 kV mm−1; 0.08% and 0.11% of the measured macroscopic strain of 0.4% is contributed by the induced ferroelastic domain texture and the volumetric strain associated with the electric-field-induced phase transformation, respectively.

Journal or Publication Title: Acta Materialia
Volume: 58
Number: 6
Uncontrolled Keywords: Electroceramics; Piezoelectricity; Phase transformation; X-ray diffraction (XRD); X-ray fluorescence
Divisions: 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
11 Department of Materials and Earth Sciences > Material Science
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
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 12 Jul 2011 12:52
Official URL: http://dx.doi.org/10.1016/j.actamat.2009.11.052
Additional Information:

SFB 595 A1

Identification Number: doi:10.1016/j.actamat.2009.11.052
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