Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2021

Vydáno

23.12.2020

Nakladatel

Taylor & Francis

Místo

ABINGDON

ISSN

2187-0764

Periodikum

Journal of Asian Ceramic Societies

Svazek

9

Číslo

1

Stát

Japonsko

Strany od

1

Strany do

8

Strany počet

8

URL

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

Plný text v Digitální knihovně

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"
}