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

doi:10.1016/j.jeurceramsoc.2016.04.041

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

Department of Resources Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	3147-3155
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	36
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2016.04.041
Publication status	Published - 2016 Oct 1

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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

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.",

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AU - Kao, Y. J.

AU - Huang, C. Y.

AU - Su, C. Y.

AU - Pithan, C.

AU - Hennings, D. F.

AU - Waser, R.

PY - 2016/10/1

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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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