Document Type

Article

Publication Date

1-30-2009

Journal or Book Title

Applied Physics Letters

Volume

94

Issue

4

First Page

042909

DOI

10.1063/1.3076109

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 antiferroelectricceramics in piezoelectric devices.

Comments

The following article appeared in Applied Physics Letters 94 (2009): 042909 and may be found at http://dx.doi.org/10.1063/1.3076109.

Rights

Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Copyright Owner

American Institute of Physics

Language

en

File Format

application/pdf

Share

COinS