Study Ratio Between the CuO and Eu₂O₃ Concentrations on Electrical Resistivity, Seebeck Coefficient and Power Factor of CuEu₂O₄

Abstract

This work, to study ratio between the CuO and Eu₂O₃ concentations better than to study the effect of CuO content, xCuO: 1Eu₂O₃ (x = 2, 2.5, 3, 3.5). All of samples were prepared by conventional solid-state reaction method. The electrical resistivity, Seebeck coefficient and power factor were measured by ZEM-3 series under helium gas atmosphere at temperature ranges of 400 − 800 K. They were found that, the electrical resistivity of all samples were decrease with increasing of measurement temperature. Seebeck coefficient are negative in whole temperature range. The power factor was calculated by P = S²/⟩ (where S is Seebeck coefficient and ⟩ is electrical resistivity) and exhibited highest value about 20 W⁻¹m⁻¹K⁻² at 775 K.

Keywords:

• Solid-state reaction
• CuEu₂O₄
• seebeck coefficient

Acknowledgments

The authors would like to thanks Thermoelectric Research Laboratory, Center of Excellence on Alternative Energy, Research and Development Institution, Sakon Nakhon Rajabhat University for thermoelectric properties measurements, Thanks are also due to Research and Development Institute, NPRU for facilities. K. Boonin and J. Kaewkhao would like to thanks National Research Council of Thailand (NRCT) and Thailand Science Research and Innovation (TSRI) for supporting this research.