Thermoelectric properties of La(1-x)MxCoO3 (M=Sr, Ca

Title
Thermoelectric properties of La(1-x)MxCoO3 (M=Sr, Ca; x=0, 0.1) ceramics for thermal sensors

Title
x=0, 0.1) ceramics for thermal sensors
Authors
강민규조광환강종윤김진상김상식윤석진
Keywords
wide range; thermal sensor; thermoelectric; dopant; seebeck
Issue Date
2009-06
Publisher
센서학회지
Citation
VOL 18, NO 3, 234-238
Abstract
We have investigated the effects of dopant on the thermoelectric properties that La(1-x)MxCoO3 (M=Sr, Ca;x=0, 0.1) bulk ceramics fabricated by the conventional solid state reaction method. The Seebeck coefficient of La(1-x)MxCoO3 (M=Sr, Ca ; x=0, 0.1) bulk ceramics was measured at wide temperature range from 300 K to 673 K. The thermoelectric properties(Seebeck coefficient and electrical resistivity) depend strongly on the kinds of dopants. Sr and Ca dopant decrease the Seebeck coefficient. Density of sintered La0.9Sr0.1CoO3 ceramic at 1523 K was 7.12 g/cm2 and Seebeck coefficient was 35 μV/K at 663 K. However, the electrical resistivity of the Sr doped sample was low and stable.
URI
http://pubs.kist.re.kr/handle/201004/35465
ISSN
1225-5475
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KIST Publication > Article
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