Alagdal, I. and West, A.R. orcid.org/0000-0002-5492-2102 (2016) Oxygen stoichiometry, conductivity and gas sensing properties of BaSnO3. Journal of Materials Chemistry C, 4. pp. 4770-4777. ISSN 2050-7534
Abstract
BaSnO3 powder loses a small amount of oxygen in air at high temperatures leading to significant changes in its electronic conductivity. At 1300 °C, it has the stoichiometry BaSnO2.9999. The oxygen deficiency can be preserved by quenching to room temperature but the oxygen loss is reversible and reoxidation commences above about 300 °C. The n-type conductivity of the quenched material at 300 °C, 1 × 10−5 ohm−1 cm−1, is four orders of magnitude higher than that of the same fully oxidised, slow-cooled material. Oxygen-deficient BaSnO3 shows rapid sensitivity to an increase in oxygen partial pressure; it is also sensitive to moisture and then shows proton conductivity.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Royal Society of Chemistry. This is an author produced version of a paper subsequently published in Journal of Materials Chemistry C. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 29 Apr 2016 14:45 |
Last Modified: | 23 Jul 2017 18:10 |
Published Version: | http://dx.doi.org/10.1039/c6tc01007e |
Status: | Published |
Publisher: | Royal Society of Chemistry |
Refereed: | Yes |
Identification Number: | 10.1039/c6tc01007e |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99067 |