dc.contributor.author | Loland, Thomas Emdal | |
dc.contributor.author | Sele, Jaran | |
dc.contributor.author | Einarsrud, Mari-Ann | |
dc.contributor.author | Vullum, Per Erik | |
dc.contributor.author | Johnsson, Mats | |
dc.contributor.author | Wiik, Kjell | |
dc.date.accessioned | 2017-10-31T06:41:43Z | |
dc.date.available | 2017-10-31T06:41:43Z | |
dc.date.created | 2016-01-19T11:00:44Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Energy Harvesting and Systems. 2015, 2 (1-2), . | nb_NO |
dc.identifier.issn | 2329-8774 | |
dc.identifier.uri | http://hdl.handle.net/11250/2462992 | |
dc.description.abstract | During the last decade oxide-based thermoelectric materials have received increased attention due to their high stability and thermal robustness at high temperatures as well as the availability and nontoxic nature of a number of promising candidates. In the present study we are investigating the thermoelectric properties of an n-type La-substituted SrTiO3 with the specific composition (La0.12Sr0.88)0.05TiO3. Nanosized powder precursors were spark plasma sintered (SPS) for 5 minutes between 900 and 1,200°C, resulting in densities between 73 and 98% and crystallite sizes between 40 nm and 1 μm. The formation of a rutile phase (TiO2) was observed in samples sintered at 1,150 and 1,200°C; at lower temperatures only single-phase cubic perovskite was observed. There was no clear evidence that the presence of rutile affected the thermal conductivity (κ). A significant reduction in κ was observed both with increasing porosity and reducing crystallite size, showing a minimum at ~700°C corresponding to ~1.3 W m−1 K−1. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | De Gruyter | nb_NO |
dc.title | Thermal Conductivity of A-site Cation-Deficient La-Substituted SrTiO3 Produced by Spark Plasma Sintering | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 9 | nb_NO |
dc.source.volume | 2 | nb_NO |
dc.source.journal | Energy Harvesting and Systems | nb_NO |
dc.source.issue | 1-2 | nb_NO |
dc.identifier.doi | 10.1515/ehs-2014-0042 | |
dc.identifier.cristin | 1316878 | |
dc.relation.project | Norges forskningsråd: 228854 | nb_NO |
dc.description.localcode | © 2015 De Gruyter. The final publication is available at www.degruyter.com | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitcode | 194,66,20,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.unitname | Institutt for fysikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |