Hydroxyl defect effect on the resistance degradation behavior in Y-doped (Ba,Ca)(Ti,Zr)O3 bulk ceramics

Y. J. Kao, C. Y. Huang, C. Y. Su, C. Pithan, D. F. Hennings, R. Waser

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Degradation behavior of acceptor (Y)-doped (Ba,Ca)(Ti,Zr)O3 ceramics sintered in moist reducing atmosphere and subsequently re-oxidized in dry or wet atmospheres was contrasted. The degradation behavior critically depends on the water vapor incorporation, the time to degradation systematically decreased with the incorporation of hydroxyl defects (OH)O. The electrical conductivity was investigated by means of impedance spectroscopy (IS) to determine properties, such as grain and grain boundary conductivity, grain boundary potential barrier height, and space charge layer thickness. Furthermore, transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) were applied to consider microstructure, microchemistry, and oxygen stoichiometry changes.

Original languageEnglish
Pages (from-to)3147-3155
Number of pages9
JournalJournal of the European Ceramic Society
Volume36
Issue number13
DOIs
Publication statusPublished - 2016 Oct 1

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Hydroxyl Radical
Degradation
Defects
Grain boundaries
Electron energy loss spectroscopy
Steam
Electric space charge
Stoichiometry
Water vapor
Spectroscopy
Oxygen
Transmission electron microscopy
Microstructure
Electric Conductivity

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Kao, Y. J. ; Huang, C. Y. ; Su, C. Y. ; Pithan, C. ; Hennings, D. F. ; Waser, R. / Hydroxyl defect effect on the resistance degradation behavior in Y-doped (Ba,Ca)(Ti,Zr)O3 bulk ceramics. In: Journal of the European Ceramic Society. 2016 ; Vol. 36, No. 13. pp. 3147-3155.
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Hydroxyl defect effect on the resistance degradation behavior in Y-doped (Ba,Ca)(Ti,Zr)O3 bulk ceramics. / Kao, Y. J.; Huang, C. Y.; Su, C. Y.; Pithan, C.; Hennings, D. F.; Waser, R.

In: Journal of the European Ceramic Society, Vol. 36, No. 13, 01.10.2016, p. 3147-3155.

Research output: Contribution to journalArticle

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AU - Hennings, D. F.

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AB - Degradation behavior of acceptor (Y)-doped (Ba,Ca)(Ti,Zr)O3 ceramics sintered in moist reducing atmosphere and subsequently re-oxidized in dry or wet atmospheres was contrasted. The degradation behavior critically depends on the water vapor incorporation, the time to degradation systematically decreased with the incorporation of hydroxyl defects (OH)O•. The electrical conductivity was investigated by means of impedance spectroscopy (IS) to determine properties, such as grain and grain boundary conductivity, grain boundary potential barrier height, and space charge layer thickness. Furthermore, transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) were applied to consider microstructure, microchemistry, and oxygen stoichiometry changes.

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