MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Effect of Addition of Titanium Nitride on Thermoelectric Performance of Yttrium-Doped Strontium Titanate
Tomoyoshi ShojiShigeaki SugiyamaKiyoshi Fuda
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2011 Volume 52 Issue 8 Pages 1531-1534

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Abstract

We examined the effect of addition of titanium nitride on thermoelectric performance of this material. The samples constructed of Y-doped SrTiO3 and TiN were prepared by two steps of the solid-state reactions. SrTiO3 with cubic perovskite structure was formed in all samples. The highest electric conductivity was found for Sr0.9Y0.1TiO3-0.1TiN, whereas the largest absolute value in Seebeck coefficient was found for Sr0.9Y0.1TiO3. Lower thermal conductivity was found for Sr0.9Y0.1TiO3-0.1TiN. The ZT was calculated from the electric conductivity, the Seebeck coefficient, and the thermal conductivity. A high performance was shown in Sr0.9Y0.1TiO3-0.1TiN, giving a high electric conductivity and a low thermal conductivity simultaneously. The highest value of ZT was obtained to be 0.26 at 1077 K for this sample.

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© 2011 The Thermoelectrics Society of Japan
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