Simultaneous enhancement in the electrical conductivity and reduction in the lattice thermal conductivity leading to enhanced thermoelectric zt realized by incorporation of metallic nanoparticles into oxide matrix

Shinji Hirata, Michitaka Ohtaki

Research output: Contribution to journalArticle


Nanoporous Fe3O4 composites containing metallic Cu nanoparticles were synthesized by reducing-leaching treatment of CuFe2O4 precursor. Thermoelectric properties of the composites sintered at 1270 ºC greatly improved compared with Fe3O4 without Cu, presumably due to a nanoporous structure and the Cu nanoparticles remaining in the Fe3O4 matrix after acid leaching. The electrical and thermal conductivity indicate that Cu in the matrix promotes the electron conduction and suppresses the phonon conduction, improving the dimensionless figure-of-merit, ZT.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
Issue number1
Publication statusPublished - Mar 2020


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Surfaces, Coatings and Films
  • Management, Monitoring, Policy and Law

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