An effect of Fe2O3 additive on a seebeck coefficient and a power factor for SmCoO3 perovskite system

Kwang Hee Jung, Soon Mok Choi, Won Seon Seo, Hyung Ho Park

Research output: Contribution to journalArticle

Abstract

SmCoO3 system was investigated for their application to themoelectric materials. All specimens showed p-type semiconducting behavior and their electrical conductivity (a), Seebeck coefficient (S) and power factor were measured at high temperature. And the effect of dopant ions on their thermoelectrical properties were also investigated. Fe3+ ion doped into Co3+ site enhanced the Seebeck coefficient and decreased the electrical conductivity simultaneously. The maximum Seebeck coefficient value for 60% doping case reached to 780 μmV/K at 240°C. However Fe 3+ doped system cause an negative effect on power factor value. In case of the pure phase, the maximum Seebeck coefficient value reached to 290 μV/K at 240°C and the maximum electrical conductivity was obtained 748 1/ (ohm×cm) at 960°C. As a result, the maximum power factor was obtained 1.49×10-4 W/mK2 at 550°C.

Original languageEnglish
Pages (from-to)457-460
Number of pages4
JournalJournal of the Korean Ceramic Society
Volume47
Issue number5
DOIs
Publication statusPublished - 2010 Sep 30

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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