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

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

2003-12-29

arxiv.org/abs/cond-mat/0312670v1

Appl. Phys. Lett. v84, 1099-1101 (2004)

Physics

Condensed Matter

Materials Science

13 pages, 3 figures, Accepted in Appl. Phys. Lett. scheduled to appear on Feb 17, 2004 issue

Scientific paper

10.1063/1.1647686

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.

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