Publication detail

Poling procedures and piezoelectric response of (Ba0.85Ca0.15Zr0.1T0.9)O-3 ceramics

BIJALWAN, V. SOKOLOV, I. TOFEL, P.

Original Title

Poling procedures and piezoelectric response of (Ba0.85Ca0.15Zr0.1T0.9)O-3 ceramics

Type

journal article in Web of Science

Language

English

Original Abstract

The goal of the current report was to find the optimal poling conditions: poling field, poling time and poling temperature for lead-free (Ba0.85Ca0.15Zr0.1T0.9)O-3 ceramic. It has been noticed that the low poling field (< 2 kV/mm) was insufficient for obtaining ideal poling state (theta = 90 degrees) due to the incomplete switching of domains and thus low piezoelectric properties (d(33) <= 438 pC/N and k(p) <= 49%). However, relevance of higher poling voltage (> 2 kV/mm) may induce electric breakdown and physical defects such as cracks in the sample, which also leads degradation of piezoelectric properties. The optimal poling field, poling time and poling temperature was found to be 2 kV/mm, 10 min and 24 degrees C, i.e., near room temperature, respectively to achieve nearly ideal poling state (theta = 86 degrees) obtained by impedance spectra, and thus enhanced piezoelectric constant d(33) = 505 pC/N and k(p) = 56% at room temperature. The O-T phase transition point was identified at 32.6 degrees C, for which a peak value of d(33(E=0V)) = 622 pm/V was realized.

Keywords

Poling conditions; piezoelectric constant; impedance spectra; lead-free piezoelectric ceramics

Authors

BIJALWAN, V.; SOKOLOV, I.; TOFEL, P.

Released

23. 12. 2020

Publisher

Taylor & Francis

Location

ABINGDON

ISBN

2187-0764

Periodical

Journal of Asian Ceramic Societies

Year of study

9

Number

1

State

Japan

Pages from

1

Pages to

8

Pages count

8

URL

https://www.tandfonline.com/doi/full/10.1080/21870764.2020.1860438

Full text in the Digital Library

http://hdl.handle.net/11012/196449

BibTex

@article{BUT167482,
  author="Vijay {Bijalwan} and Ilya {Sokolov} and Pavel {Tofel}",
  title="Poling procedures and piezoelectric response of (Ba0.85Ca0.15Zr0.1T0.9)O-3 ceramics",
  journal="Journal of Asian Ceramic Societies",
  year="2020",
  volume="9",
  number="1",
  pages="1--8",
  doi="10.1080/21870764.2020.1860438",
  issn="2187-0764",
  url="https://www.tandfonline.com/doi/full/10.1080/21870764.2020.1860438"
}