Thermoelectric properties of Ca3-xEuxCo 4O9+δ (0≤x≤0.1)

Ankam Bhaskar, Y. C. Huang, Chia Jyi Liu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Ca3-xEuxCo4O9+δ (x=0.00, 0.05 and 0.10) samples were prepared by conventional solid-state synthesis and their properties measured at 25-300 K. The x-ray diffraction (XRD) patterns revealed that all the samples are single phase. The thermopower of all the samples was positive, indicating that the predominant carriers are holes over the entire temperature range. The total thermal conductivity values decreased monotonically with increasing Eu3+ content. Ca2.95Eu 0.05Co4O9+δ had the highest dimensionless figure of merit of 0.038 at 300 K, representing an improvement of about 52% compared to undoped Ca3Co4O9+δ.

Original languageEnglish
Pages (from-to)24-27
Number of pages4
JournalSolid State Communications
Volume168
DOIs
Publication statusPublished - 2013 Jan 1

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Thermoelectric power
Diffraction patterns
Thermal conductivity
X rays
figure of merit
Temperature
x ray diffraction
thermal conductivity
diffraction patterns
solid state
synthesis
temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Bhaskar, Ankam ; Huang, Y. C. ; Liu, Chia Jyi. / Thermoelectric properties of Ca3-xEuxCo 4O9+δ (0≤x≤0.1). In: Solid State Communications. 2013 ; Vol. 168. pp. 24-27.
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Thermoelectric properties of Ca3-xEuxCo 4O9+δ (0≤x≤0.1). / Bhaskar, Ankam; Huang, Y. C.; Liu, Chia Jyi.

In: Solid State Communications, Vol. 168, 01.01.2013, p. 24-27.

Research output: Contribution to journalArticle

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AU - Bhaskar, Ankam

AU - Huang, Y. C.

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AB - Ca3-xEuxCo4O9+δ (x=0.00, 0.05 and 0.10) samples were prepared by conventional solid-state synthesis and their properties measured at 25-300 K. The x-ray diffraction (XRD) patterns revealed that all the samples are single phase. The thermopower of all the samples was positive, indicating that the predominant carriers are holes over the entire temperature range. The total thermal conductivity values decreased monotonically with increasing Eu3+ content. Ca2.95Eu 0.05Co4O9+δ had the highest dimensionless figure of merit of 0.038 at 300 K, representing an improvement of about 52% compared to undoped Ca3Co4O9+δ.

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