Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Domain wall-grain boundary interactions in polycrystalline Pb(Zr0.7Ti0.3)O3 piezoceramics

Schultheiß, J. ; Checchia, S. LU orcid ; Uršič, H. ; Frömling, T. ; Daniels, J. E. ; Malič, B. ; Rojac, T. and Koruza, J. (2020) In Journal of the European Ceramic Society 40(12). p.3965-3973
Abstract

Interactions between grain boundaries and domain walls were extensively studied in ferroelectric films and bicrystals. This knowledge, however, has not been transferred to polycrystalline ceramics, in which the grain size represents a powerful tool to tailor the electromechanical and dielectric response. Here, we relate changes in dielectric and electromechanical properties of a bulk polycrystalline Pb(Zr0.7Ti0.3)O3 to domain wall interactions with grain boundaries. Samples with grain sizes in the range of 3.9–10.4 μm were prepared and their microstructure, crystal structure, and dielectric/electromechanical properties were investigated. A decreasing grain size was accompanied by a reduction in... (More)

Interactions between grain boundaries and domain walls were extensively studied in ferroelectric films and bicrystals. This knowledge, however, has not been transferred to polycrystalline ceramics, in which the grain size represents a powerful tool to tailor the electromechanical and dielectric response. Here, we relate changes in dielectric and electromechanical properties of a bulk polycrystalline Pb(Zr0.7Ti0.3)O3 to domain wall interactions with grain boundaries. Samples with grain sizes in the range of 3.9–10.4 μm were prepared and their microstructure, crystal structure, and dielectric/electromechanical properties were investigated. A decreasing grain size was accompanied by a reduction in large-signal electromechanical properties and an increase in small-signal relative permittivity. High-energy diffraction analysis revealed increasing microstrains upon decreasing the grain size, while piezoresponse force microscopy indicated an increased local coercive voltage near grain boundaries. The changes in properties were thus related to strained material volume close to the grain boundaries exhibiting reduced domain wall dynamics.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diffraction, Domain wall dynamics, Grain size, Piezoelectric, PZT
in
Journal of the European Ceramic Society
volume
40
issue
12
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85083829499
ISSN
0955-2219
DOI
10.1016/j.jeurceramsoc.2020.03.054
language
English
LU publication?
yes
id
bb717774-d2be-4c76-8a52-2c3699fba056
date added to LUP
2020-05-28 17:36:17
date last changed
2025-04-04 14:16:17
@article{bb717774-d2be-4c76-8a52-2c3699fba056,
  abstract     = {{<p>Interactions between grain boundaries and domain walls were extensively studied in ferroelectric films and bicrystals. This knowledge, however, has not been transferred to polycrystalline ceramics, in which the grain size represents a powerful tool to tailor the electromechanical and dielectric response. Here, we relate changes in dielectric and electromechanical properties of a bulk polycrystalline Pb(Zr<sub>0.7</sub>Ti<sub>0.3</sub>)O<sub>3</sub> to domain wall interactions with grain boundaries. Samples with grain sizes in the range of 3.9–10.4 μm were prepared and their microstructure, crystal structure, and dielectric/electromechanical properties were investigated. A decreasing grain size was accompanied by a reduction in large-signal electromechanical properties and an increase in small-signal relative permittivity. High-energy diffraction analysis revealed increasing microstrains upon decreasing the grain size, while piezoresponse force microscopy indicated an increased local coercive voltage near grain boundaries. The changes in properties were thus related to strained material volume close to the grain boundaries exhibiting reduced domain wall dynamics.</p>}},
  author       = {{Schultheiß, J. and Checchia, S. and Uršič, H. and Frömling, T. and Daniels, J. E. and Malič, B. and Rojac, T. and Koruza, J.}},
  issn         = {{0955-2219}},
  keywords     = {{Diffraction; Domain wall dynamics; Grain size; Piezoelectric; PZT}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{3965--3973}},
  publisher    = {{Elsevier}},
  series       = {{Journal of the European Ceramic Society}},
  title        = {{Domain wall-grain boundary interactions in polycrystalline Pb(Zr<sub>0.7</sub>Ti<sub>0.3</sub>)O<sub>3</sub> piezoceramics}},
  url          = {{http://dx.doi.org/10.1016/j.jeurceramsoc.2020.03.054}},
  doi          = {{10.1016/j.jeurceramsoc.2020.03.054}},
  volume       = {{40}},
  year         = {{2020}},
}