TU Darmstadt / ULB / TUbiblio

Soft and hybrid-doped Pb(Zr,Ti)O3 ceramics under stress, electric field, and temperature loading

Suchanicz, J. and Kim-Ngan, N.-T. H. and Konieczny, K. and Jankowska-Sumara, I. and Balogh, Adam G. :
Soft and hybrid-doped Pb(Zr,Ti)O3 ceramics under stress, electric field, and temperature loading.
[Online-Edition: http://dx.doi.org/10.1063/1.3585826]
In: Journal of Applied Physics, 109 (10) p. 104105. ISSN 00218979
[Article] , (2011)
Note:

SFB 595 B2

Official URL: http://dx.doi.org/10.1063/1.3585826

Abstract

We investigated the influence of uniaxial pressure (0–1000 bars) applied parallelly or perpendicularly to the ac or dc electric field (in a one-dimensional or two-dimensional manner) on dielectric and ferroelectric properties of selected soft and hybrid-doped PZT ceramics (1 mol. % Gd, 1 mol. % La and 1 mol. % (La+Fe)-doped Pb(Zr0.54Ti0.46) O3). Applying uniaxial pressure leads to a reduction of the peak intensity of the electric permittivity (ɛ), of the frequency dispersion, and of the dielectric hysteresis. The peak intensity of ɛ becomes diffused and shifts to a higher temperatures with increasing pressure. Simultaneous application of uniaxial pressure and dc electric field (perpendicular to each other) in the poling process implies in improvement of the ferroelectric properties, indicating a new possibility for poling materials with a high coercive field and/or high electric conductivity. It was also found that simultaneous application of uniaxial pressure and dc electric field (perpendicular to each other) allowed observation of the space charge in the depolarization process. The electrostrictive coefficient Q11 and differential permittivity were evaluated from obtained data. Our results show that applying uniaxial pressure induces similar effects as increasing the Ti-ion concentration in the PZT system. We interpreted our results based on the Cochran soft-mode and domain switching processes under the action of pressure.

Item Type: Article
Erschienen: 2011
Creators: Suchanicz, J. and Kim-Ngan, N.-T. H. and Konieczny, K. and Jankowska-Sumara, I. and Balogh, Adam G.
Title: Soft and hybrid-doped Pb(Zr,Ti)O3 ceramics under stress, electric field, and temperature loading
Language: English
Abstract:

We investigated the influence of uniaxial pressure (0–1000 bars) applied parallelly or perpendicularly to the ac or dc electric field (in a one-dimensional or two-dimensional manner) on dielectric and ferroelectric properties of selected soft and hybrid-doped PZT ceramics (1 mol. % Gd, 1 mol. % La and 1 mol. % (La+Fe)-doped Pb(Zr0.54Ti0.46) O3). Applying uniaxial pressure leads to a reduction of the peak intensity of the electric permittivity (ɛ), of the frequency dispersion, and of the dielectric hysteresis. The peak intensity of ɛ becomes diffused and shifts to a higher temperatures with increasing pressure. Simultaneous application of uniaxial pressure and dc electric field (perpendicular to each other) in the poling process implies in improvement of the ferroelectric properties, indicating a new possibility for poling materials with a high coercive field and/or high electric conductivity. It was also found that simultaneous application of uniaxial pressure and dc electric field (perpendicular to each other) allowed observation of the space charge in the depolarization process. The electrostrictive coefficient Q11 and differential permittivity were evaluated from obtained data. Our results show that applying uniaxial pressure induces similar effects as increasing the Ti-ion concentration in the PZT system. We interpreted our results based on the Cochran soft-mode and domain switching processes under the action of pressure.

Journal or Publication Title: Journal of Applied Physics
Volume: 109
Number: 10
Publisher: AIP
Uncontrolled Keywords: dielectric depolarisation, dielectric hysteresis, dielectric polarisation, electric domains, electrical conductivity, electrostriction, ferroelectric ceramics, ferroelectric coercive field, ferroelectric switching, gadolinium, iron, lanthanum, lead compounds, permittivity, soft matter, soft modes, space charge
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Material Analytics
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B2: Investigations of the defect structure and diffusion in ferroelectric materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 10 Aug 2011 10:43
Official URL: http://dx.doi.org/10.1063/1.3585826
Additional Information:

SFB 595 B2

Identification Number: doi:10.1063/1.3585826
Export:

Optionen (nur für Redakteure)

View Item View Item