Journal
JOURNAL OF MATERIOMICS
Volume 5, Issue 2, Pages 273-279Publisher
ELSEVIER
DOI: 10.1016/j.jmat.2019.02.004
Keywords
Single crystals; Solid oxide fuel cell; Solid solutions; Ionic conducting materials; ZrO2-Sc2O3-CeO2-Y2O3
Funding
- Russian Science Foundation [17-79-30071, 14]
- Russian Ministry of Education and Science
- Russian Science Foundation [17-79-30071] Funding Source: Russian Science Foundation
Ask authors/readers for more resources
This work is a study of the effect of co-doping (ZrO2)(0.9)(Sc2O3)(0.1) solid solution with yttria and/or ceria on the phase composition, local structure and transport properties of the crystals. The solid solution crystals were grown using directional melt crystallization in cold crucible. We show that ceria co-doping of the crystals does not stabilize the high-temperature cubic phase in the entire crystal bulk, unlike yttria codoping. Ceria co-doping of the (ZrO2)(0.9)(Sc2O3)(0.1) crystals increases their conductivity, whereas the addition of 1 mol.% yttria tangibly reduces the conductivity. Equimolar co-doping of the (ZrO2)(0.9)(Sc2O3)(0.1) crystals with ceria and yttria changes the conductivity but slightly. Optical spectroscopy of the local structure of the crystals identified different types of optical centers. We found that the fraction of the trivalent cations having a vacancy in the first coordination sphere in the ceria co-doped crystals is smaller compared with that in the yttria co-doped crystals. (C) 2019 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available