High-Temperature thermoelectric properties in the La2-xR xCuO4 (R: Pr, Y, Nb) ceramics

Yong Liu, Yuan Hua Lin, Bo Ping Zhang, Hong Min Zhu, Ce Wen Nan, Jinle Lan, Jing Feng Li

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

La2-xRxCuO4 (R: Pr, Y, Nb) polycrystalline ceramics have been prepared by a spark plasma sintering process. Analysis of the microstructure and phase composition shows that pure La 2CuO4 ceramics with a high density can be obtained, and no impurity phases appear. All the samples exhibit a metal-semiconductor transition behavior at ∼750 K, which could be ascribed to the decreasing charge density as a result of loss of oxygen atoms and various conduction mechanisms in these La2CuO4-based ceramics. Our results indicate that the La1.98Y0.02CuO4 ceramics show large thermoelectric power ∼1.0 × 10-3 μW·(m·K2)-1, and the evaluated ZT can reach 0.17 at 330 K, which potentially make them useful for thermoelectric applications.

Original languageEnglish
Pages (from-to)934-937
Number of pages4
JournalJournal of the American Ceramic Society
Volume92
Issue number4
DOIs
Publication statusPublished - 2009 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High-Temperature thermoelectric properties in the La<sub>2-x</sub>R <sub>x</sub>CuO<sub>4</sub> (R: Pr, Y, Nb) ceramics'. Together they form a unique fingerprint.

  • Cite this