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Stress-induced structural changes in La-doped BiFeO3–PbTiO3 high-temperature piezoceramics

Leist, Thorsten and Webber, Kyle G. and Jo, Wook and Aulbach, Emil and Rödel, Jürgen and Prewitt, Anderson D. and Jones, Jacob L. and Schmidlin, Josh and Hubbard, Camden R. (2010):
Stress-induced structural changes in La-doped BiFeO3–PbTiO3 high-temperature piezoceramics.
In: Acta Materialia, pp. 5962-5971, 58, (18), ISSN 13596454, [Online-Edition: http://dx.doi.org/10.1016/j.actamat.2010.07.012],
[Article]

Abstract

High-temperature piezoelectric polycrystalline ceramics of the system (1 − x)(Bi1−yLay)FeO3-xPbTiO3 (BF–PT), which are mixed phase in their consolidated state, have been investigated by in situ neutron diffraction during the application of uniaxial compressive stress. It is suggested that the achievable strain in BF–PT is largely generated by straining of the rhombohedral phase. The results of the neutron diffraction measurements are compared and discussed with respect to the measured macroscopic ferroelastic constitutive behavior for various compositions of BF–PT.

Item Type: Article
Erschienen: 2010
Creators: Leist, Thorsten and Webber, Kyle G. and Jo, Wook and Aulbach, Emil and Rödel, Jürgen and Prewitt, Anderson D. and Jones, Jacob L. and Schmidlin, Josh and Hubbard, Camden R.
Title: Stress-induced structural changes in La-doped BiFeO3–PbTiO3 high-temperature piezoceramics
Language: English
Abstract:

High-temperature piezoelectric polycrystalline ceramics of the system (1 − x)(Bi1−yLay)FeO3-xPbTiO3 (BF–PT), which are mixed phase in their consolidated state, have been investigated by in situ neutron diffraction during the application of uniaxial compressive stress. It is suggested that the achievable strain in BF–PT is largely generated by straining of the rhombohedral phase. The results of the neutron diffraction measurements are compared and discussed with respect to the measured macroscopic ferroelastic constitutive behavior for various compositions of BF–PT.

Journal or Publication Title: Acta Materialia
Volume: 58
Number: 18
Uncontrolled Keywords: Piezoelectricity; Ferroelectricity; Neutron diffraction
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 > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 17 Jun 2011 12:41
Official URL: http://dx.doi.org/10.1016/j.actamat.2010.07.012
Identification Number: doi:10.1016/j.actamat.2010.07.012
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