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La0.95Sr0.05CoO3: An efficient room-temperature thermoelectric oxide

By J. Androulakis, P. Migiakis and J. Giapintzakis

Abstract

We present measurements of electrical resistivity, thermal conductivity and thermopower of polycrystalline Sr-doped LaCoO3 with composition La0.95Sr0.05CoO3. Our data show that the investigated compound exhibits a very respectable room temperature thermoelectric figure of merit value of 0.18. Our results not only show that oxides are promising candidates for thermoelectric cooling applications, but also point towards the need for careful theoretical calculations that will serve as a guide in producing the next generation of thermoelectric materials.Comment: 13 pages, 3 figures, Accepted in Appl. Phys. Lett. scheduled to appear on Feb 17, 2004 issu

Topics: Condensed Matter - Materials Science
Publisher: 'AIP Publishing'
Year: 2003
DOI identifier: 10.1063/1.1647686
OAI identifier: oai:arXiv.org:cond-mat/0312670

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