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- Sillassen, M.University of Aarhus, Department of Physics and Astronomy and Interdisciplinary Nanoscience Center (iNANO) (author)
Ionic conductivity and thermal stability of magnetron-sputtered nanocrystalline yttria-stabilized zirconia
- Article/chapterEnglish2009
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- AIP Publishing,2009
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:liu-18418
- https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18418URI
- https://doi.org/10.1063/1.3130404DOI
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- Language:English
- Summary in:English
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- Original Publication: M. Sillassen, Per Eklund, M. Sridharan, N. Pryds, N. Bonanos and J. Bottiger, Ionic conductivity and thermal stability of magnetron-sputtered nanocrystalline yttria-stabilized zirconia, 2009, Journal of Applied Physics, (105), 10, 104907. http://dx.doi.org/10.1063/1.3130404 Copyright: American Institute of Physics http://www.aip.org/
- Thermally stable, stoichiometric, cubic yttria-stabilized zirconia (YSZ) thin-film electrolytes have been synthesized by reactive pulsed dc magnetron sputtering from a Zr-Y (80/20 at. %) alloy target. Films deposited at floating potential had a ‹111› texture. Single-line profile analysis of the 111 x-ray diffraction peak yielded a grain size of ~20 nm and a microstrain of ~2% regardless of deposition temperature. Films deposited at 400 °C and selected bias voltages in the range from -70 to -200 V showed a reduced grain size for higher bias voltages, yielding a grain size of ~6 nm and a microstrain of ~2.5% at bias voltages of -175 and -200 V with additional incorporation of argon. The films were thermally stable; very limited grain coarsening was observed up to an annealing temperature of 800 °C. Temperature-dependent impedance spectroscopy analysis of the YSZ films with Ag electrodes showed that the in-plane ionic conductivity was within one order of magnitude higher in films deposited with substrate bias corresponding to a decrease in grain size compared to films deposited at floating potential. This suggests that there is a significant contribution to the ionic conductivity from grain boundaries. The activation energy for oxygen ion migration was determined to be between 1.14 and 1.30 eV.
Subject headings and genre
- NATURAL SCIENCES
- NATURVETENSKAP
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- Eklund, PerLinköpings universitet,Tunnfilmsfysik,Tekniska högskolan(Swepub:liu)perek02 (author)
- Sridharan, M.University of Aarhus, Department of Physics and Astronomy and Interdisciplinary Nanoscience Center (iNANO) (author)
- Pryds, N.Technical University of Denmark, Riso National Laboratory for Sustainable Energy,Fuell Cells and Solid State Chemistry Division (author)
- Bonanos, N.Technical University of Denmark, Riso National Laboratory for Sustainable Energy,Fuell Cells and Solid State Chemistry Division (author)
- Bottiger, J.University of Aarhus, Department of Physics and Astronomy and Interdisciplinary Nanoscience Center (iNANO) (author)
- University of Aarhus, Department of Physics and Astronomy and Interdisciplinary Nanoscience Center (iNANO)Tunnfilmsfysik (creator_code:org_t)
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- In:Journal of Applied Physics: AIP Publishing105:10, s. 104907-0021-89791089-7550
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