Structural and thermoelectric properties of the Pr2Zr2O7 compound-Reference-Cited by-同舟云学术

Structural and thermoelectric properties of the Pr2Zr2O7 compound

Published:2019-12-31 Issue: Volume: Page:4-9
ISSN:2414-4924
Container-title:ECORFAN Journal-Democratic Republic of Congo
language:en
Short-container-title:EJDRC

Author:

Quiroz-Rodríguez Adolfo¹^ORCID,Guarneros-Aguilar Cesia²^ORCID,Agustin-Serrano Ricardo³^ORCID

Affiliation:

1. Universidad Tecnológica de Xicotepec de Juárez

2. Instituto Politécnico Nacional

3. Benemérita Universidad Autónoma de Puebla

Abstract

In this research, it is presented a detailed study of the structural and thermoelectric properties of the pyrochlore zirconium Pr2Zr2O7 compound prepared by solid-state reaction (SSR) in air at ambient pressure. The synthesized sample was characterized using powder X-ray diffraction. The thermal stability of the thermoelectric compound (TE) Pr2Zr2O7 was tested by thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Scanning electron microscopy shows that the crystal size varies between 0.69 and 2.81μm. Electrical conductivity (\sigma) of the sample calcined at 1400 °C presented values increase irregularly with the increasing temperature from 0.001 to 0.018 S cm-1 as expected in a semiconductor material. The thermal conductivity is lower than 0.44 - 775 W m-1 K-1 which is quite anomalous in comparison with the thermal conductivity of other oxides.

Publisher

ECORFAN

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