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Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite–lead titanate

Leist, Thorsten and Webber, Kyle G. and Jo, Wook and Granzow, Torsten and Aulbach, Emil and Suffner, Jens and Rödel, Jürgen (2011):
Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite–lead titanate.
In: Journal of Applied Physics, pp. 054109-1, 109, (5), ISSN 00218979, [Online-Edition: http://dx.doi.org/10.1063/1.3555599],
[Article]

Abstract

The mechanical stress-induced domain switching and energy dissipation in morphotropic phase boundary (1-x)(Bi1?-?yLay)FeO3–xPbTiO3 during uniaxial compressive loading have been investigated at three different temperatures. The strain obtained was found to decrease with increasing lanthanum content, although a sharp increase in strain was observed for compositions doped with 7.5 and 10 at. % La. Increased domain switching was found in compositions with decreased tetragonality. This is discussed in terms of the competing influences of the amount of domain switching and the spontaneous strain on the macroscopic behavior under external fields. Comparison of the mechanically and electrically dissipated energy showed significant differences, discussed in terms of the different microscopic interactions of electric field and stress.

Item Type: Article
Erschienen: 2011
Creators: Leist, Thorsten and Webber, Kyle G. and Jo, Wook and Granzow, Torsten and Aulbach, Emil and Suffner, Jens and Rödel, Jürgen
Title: Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite–lead titanate
Language: English
Abstract:

The mechanical stress-induced domain switching and energy dissipation in morphotropic phase boundary (1-x)(Bi1?-?yLay)FeO3–xPbTiO3 during uniaxial compressive loading have been investigated at three different temperatures. The strain obtained was found to decrease with increasing lanthanum content, although a sharp increase in strain was observed for compositions doped with 7.5 and 10 at. % La. Increased domain switching was found in compositions with decreased tetragonality. This is discussed in terms of the competing influences of the amount of domain switching and the spontaneous strain on the macroscopic behavior under external fields. Comparison of the mechanically and electrically dissipated energy showed significant differences, discussed in terms of the different microscopic interactions of electric field and stress.

Journal or Publication Title: Journal of Applied Physics
Volume: 109
Number: 5
Uncontrolled Keywords: bismuth compounds, doping profiles, electric domains, ferroelectric switching, iron compounds, lanthanum compounds, lead compounds, piezoceramics, piezoelectricity
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: 20 Jun 2011 13:55
Official URL: http://dx.doi.org/10.1063/1.3555599
Identification Number: doi:10.1063/1.3555599
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