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Mechanical stability of piezoelectric properties in ferroelectric perovskites

Schader, Florian H; Morozov, Maxim; Tjønneland Wefring, Espen; Grande, Tor; Webber, Kyle G
Journal article, Peer reviewed
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URI
http://hdl.handle.net/11250/2381894
Date
2015
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  • Institutt for materialteknologi [1568]
  • Publikasjoner fra CRIStin - NTNU [19793]
Original version
Journal of Applied Physics 2015, 117(19)   10.1063/1.4919815
Abstract
The influence of uniaxial compressive stress on the small signal direct piezoelectric coefficient of hard and soft Pb(Zr,Ti)O3 at the morphotropic phase boundary was investigated as a function of temperature from 25 °C to 450 °C. The stress- and temperature-dependent piezoelectric data indicate that stress is capable of either directly or indirectly modifying the orientation of polar defects in the crystal lattice and reduce the internal bias field. At higher temperatures, the mobility of polar defects was found to increase, corresponding to a two-step decrease in the direct piezoelectric coefficient and a decrease in the frequency dispersion. Quenching experiments were used to elucidate the role of the internal bias field on the stress-dependent piezoelectric response.
Publisher
American Institute of Physics
Journal
Journal of Applied Physics
Copyright
Copyright (c) AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.

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