TU Darmstadt / ULB / TUbiblio

Auxetic behavior under electrical loads in an induced ferroelectric phase

Tan, Xiaoli and Jo, Wook and Granzow, Torsten and Frederick, Joshua and Aulbach, Emil and Rödel, Jürgen (2009):
Auxetic behavior under electrical loads in an induced ferroelectric phase.
In: Applied Physics Letters, pp. 042909-1-042909-3, 94, (4), ISSN 00036951,
[Online-Edition: http://dx.doi.org/10.1063/1.3076109],
[Article]

Abstract

The longitudinal and transverse strains were measured as a function of applied electric fields in a bulk ceramic sample of Pb0.99Nb0.02[(Zr0.57Sn0.43)0.94Ti0.06]0.98O3 at room temperature. Instead of a transverse contraction, a transverse expansion was observed in the electric-field-induced ferroelectric phase after the antiferroelectric-to-ferroelectric phase transition. Therefore, an auxetic behavior was established in monolithic ferroelectric polycrystalline ceramics under electrical loads. The behavior is characterized by a negative strain ratio that is analogous to the Poisson’s ratio. The transverse expansion leads to a large hydrostatic piezoelectric coefficient dh, which suggests new applications of antiferroelectric ceramics in piezoelectric devices.

Item Type: Article
Erschienen: 2009
Creators: Tan, Xiaoli and Jo, Wook and Granzow, Torsten and Frederick, Joshua and Aulbach, Emil and Rödel, Jürgen
Title: Auxetic behavior under electrical loads in an induced ferroelectric phase
Language: English
Abstract:

The longitudinal and transverse strains were measured as a function of applied electric fields in a bulk ceramic sample of Pb0.99Nb0.02[(Zr0.57Sn0.43)0.94Ti0.06]0.98O3 at room temperature. Instead of a transverse contraction, a transverse expansion was observed in the electric-field-induced ferroelectric phase after the antiferroelectric-to-ferroelectric phase transition. Therefore, an auxetic behavior was established in monolithic ferroelectric polycrystalline ceramics under electrical loads. The behavior is characterized by a negative strain ratio that is analogous to the Poisson’s ratio. The transverse expansion leads to a large hydrostatic piezoelectric coefficient dh, which suggests new applications of antiferroelectric ceramics in piezoelectric devices.

Journal or Publication Title: Applied Physics Letters
Volume: 94
Number: 4
Uncontrolled Keywords: dielectric polarisation, electric domains, elongation, ferroelectric ceramics, ferroelectric transitions, lead compounds, load (electric), niobium compounds, piezoelectricity
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: 14 Jun 2011 13:44
Official URL: http://dx.doi.org/10.1063/1.3076109
Identification Number: doi:10.1063/1.3076109
Export:

Optionen (nur für Redakteure)

View Item View Item