Improvement in thermoelectric properties of CuAlO2 by adding Fe2O3

K. Park, K. Y. Ko, H. C. Kwon, S. Nahm

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Fe addition up to x = 0.1 in CuAl1-xFexO2 (0 ≤ x ≤ 0.2) led to an increase in electrical conductivity with an increase in Fe content because of increases in the grain size, density, and carrier density. On the other hand, Fe substitution up to x = 0.1 caused a decrease in the Seebeck coefficient due mainly to an increase in carrier density. The highest value of power factor (1.1 × 10-4 W m-1 K-2) was attained for CuAl0.9Fe0.1O2 at 1140 K. We have demonstrated in the present study that Fe addition is highly effective for enhancing high-temperature thermoelectric properties of CuAlO2.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalJournal of Alloys and Compounds
Volume437
Issue number1-2
DOIs
Publication statusPublished - 2007 Jun 28

Keywords

  • CuAlFeO
  • Electrical conductivity
  • Power factor
  • Seebeck coefficient
  • Thermoelectric properties

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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