What is it about?
The behavior of grain and grain boundary conductivity of acceptor (Sc)-doped (Ba,Ca)(Ti,Zr)O3 ceramics sintered in moist reducing atmosphere and subsequently re-oxidized in dry and moist atmosphere was investigated by means of impedance spectroscopy (IS).
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Why is it important?
Our finding show that water vapor was found to react with oxygen vacancies, forming positively charged hydroxyl defects on regular oxygen sites in the crystal lattice. Proton hopping is considered to raise the ionic conductivity significantly. Therefore, hydroxyl defects in turn influence the grain conduction.
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This page is a summary of: Hydroxyl Defect Effect on Reoxidation of Sc‐Doped (
Ba
,
Ca
)(
Ti
,
Zr
)
O
3
Fired in Reducing Atmospheres, Journal of the American Ceramic Society, January 2016, Wiley,
DOI: 10.1111/jace.14092.
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