Defect Chemistry of Undoped and Acceptor-Doped BaPbO3

Defect Chemistry of Undoped and Acceptor-Doped BaPbO3

The equilibrium defect chemistry of polycrystalline, undoped, and acceptor‐doped BaPbO3 was studied by measurement of the equilibrium electrical conductivity as a function of temperature, 800°–900°C, and oxygen activity, 10−18–1 atm. Both equilibrium electrical conductivity data of undoped and accep...

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Veröffentlicht in:Journal of the American Ceramic Society 2007-11, Vol.90 (11), p.3628-3631
Hauptverfasser: Lu, Yu-Dong, Wang, Xin, Zhuang, Zhi-Qiang, Liu, Bao-Ling
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Sprache:eng
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Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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container_end_page 3631
container_issue 11
container_start_page 3628
container_title Journal of the American Ceramic Society
container_volume 90
creator Lu, Yu-Dong
Wang, Xin
Zhuang, Zhi-Qiang
Liu, Bao-Ling
description The equilibrium defect chemistry of polycrystalline, undoped, and acceptor‐doped BaPbO3 was studied by measurement of the equilibrium electrical conductivity as a function of temperature, 800°–900°C, and oxygen activity, 10−18–1 atm. Both equilibrium electrical conductivity data of undoped and acceptor‐doped samples were quantitatively fit to a defect model involving only doubly ionized oxygen vacancies, lead vacancies, holes, and acceptor impurities. The results in low and midrange of oxygen activity are dominated by acceptor impurities, whether deliberately added or not. Only in the highly oxidized condition is the conductivity independent of impurity content, confirming that this region represents the intrinsic behavior of BaPbO3.
doi_str_mv 10.1111/j.1551-2916.2007.01908.x
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subjects Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
title Defect Chemistry of Undoped and Acceptor-Doped BaPbO3
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