TU Darmstadt / ULB / TUbiblio

Mechanical stability of piezoelectric properties in ferroelectric perovskites

Schader, Florian H. and Morozov, Maxim and Wefring, Espen T. and Grande, Tor and Webber, Kyle G. (2015):
Mechanical stability of piezoelectric properties in ferroelectric perovskites.
In: Journal of Applied Physics, pp. 194101(1-8), 117, (19), ISSN 0021-8979,
[Online-Edition: http://dx.doi.org/10.1063/1.4919815],
[Article]

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.

Item Type: Article
Erschienen: 2015
Creators: Schader, Florian H. and Morozov, Maxim and Wefring, Espen T. and Grande, Tor and Webber, Kyle G.
Title: Mechanical stability of piezoelectric properties in ferroelectric perovskites
Language: English
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.

Journal or Publication Title: Journal of Applied Physics
Volume: 117
Number: 19
Uncontrolled Keywords: Piezoelectric fields; Piezoelectric transducers; Domain walls; Piezoelectric materials; Polarization
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
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: 27 May 2015 08:12
Official URL: http://dx.doi.org/10.1063/1.4919815
Identification Number: doi:10.1063/1.4919815
Funders: F.H.S. and K.G.W. gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft under WE 4972/1-1 and WE 4972/2-1.
Export:
Suche nach Titel in: TUfind oder in Google

Optionen (nur für Redakteure)

View Item View Item