dc.contributor.author | Singh, Sathya Prakash | |
dc.contributor.author | Kanas, Nikola | |
dc.contributor.author | Desissa, Temesgen Debelo | |
dc.contributor.author | Johnsson, Mats | |
dc.contributor.author | Einarsrud, Mari-Ann | |
dc.contributor.author | Norby, Truls Eivind | |
dc.contributor.author | Wiik, Kjell | |
dc.date.accessioned | 2020-02-03T14:23:48Z | |
dc.date.available | 2020-02-03T14:23:48Z | |
dc.date.created | 2019-10-08T13:39:04Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Journal of the European Ceramic Society. 2019, 1-7. | nb_NO |
dc.identifier.issn | 0955-2219 | |
dc.identifier.uri | http://hdl.handle.net/11250/2639376 | |
dc.description.abstract | Lanthanum doped strontium titanate is a potential n-type thermoelectric material at moderate and high temperatures. (La0.12Sr0.88)0.95TiO3 ceramics were prepared by two different routes, conventional sintering at 1500 °C and spark plasma sintering at temperatures between 925 and 1200 °C. Samples with grain size between 40 nm and 1.4 μm were prepared and characterized with respect to their thermoelectric transport properties at temperatures between 100 and 900 °C under reducing conditions (H2/H2O-buffer mixtures). The thermal conductivity was significantly reduced with decreasing grain size reaching a value of 1.3 W m−1. K−1 at 600 °C for grain size of 40 nm and porosity of 19%. Electrical conductivity increased with increasing grain size showing a maximum of 500 S cm−1 at 200 °C for a grain size of 1.4 μm. The highest figure-of-merit (zT) was measured for samples with 1.4 μm average grain size reaching 0.2 at 500 °C. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Thermoelectric properties of A-site deficient La-doped SrTiO3 at 100–900 °C under reducing conditions | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 1-7 | nb_NO |
dc.source.journal | Journal of the European Ceramic Society | nb_NO |
dc.identifier.doi | 10.1016/j.jeurceramsoc.2019.09.024 | |
dc.identifier.cristin | 1734946 | |
dc.description.localcode | © 2019. This is the authors’ accepted and refereed manuscript to the article. Locked until 13.9.2021 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |