Abstract

The alloy Zn 41Sb 59 was synthesized by high-pressure techniques and its bulk amorphous nature at ambient conditions confirmed by X-ray powder diffraction and electron microscopy studies. Electrical resistivity, thermopower, and thermal conductivity of Zn 41Sb 59 were measured in a temperature range from 6 to 350 K. Zn 41Sb 59 is a semiconductor and resistivity data suggest an activation energy of about 0.25 eV above 250 K. The thermopower is positive and increases with increasing temperature. Room-temperature values for the resistivity and thermopower are 8 Ω cm and 300 μV/K, respectively. The temperature dependence of the thermal conductivity is characteristic for amorphous solids and continuously increasing from 0.08 W/(m K) at 6 K to 0.19 W/(m K) at room temperature. Comparison of the thermal conductivity of Zn 41Sb 59 with the thermal lattice conductivity of the crystalline thermoelectric material β-Zn 4Sb 3 reveals a remarkable resemblance, justifying the classification of the latter as a phonon-glass material.

Original languageEnglish (US)
Pages (from-to)151-155
Number of pages5
JournalChemistry of Materials
Volume21
Issue number1
DOIs
StatePublished - Jan 13 2009

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Crystalline materials
Thermoelectric power
Thermal conductivity
Temperature
Crystal lattices
X ray powder diffraction
Electron microscopy
Activation energy
Semiconductor materials
Glass

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Comparative study of the thermoelectric properties of amorphous Zn 41Sb 59 and crystalline Zn 4Sb 3 . / Wu, Yang; Nylén, Johanna; Naseyowma, Craig; Newman, Nathan; Francisco, J. Garcia Garcia; Häussermann, Ulrich.

In: Chemistry of Materials, Vol. 21, No. 1, 13.01.2009, p. 151-155.

Research output: Contribution to journalArticle

Wu, Yang ; Nylén, Johanna ; Naseyowma, Craig ; Newman, Nathan ; Francisco, J. Garcia Garcia ; Häussermann, Ulrich. / Comparative study of the thermoelectric properties of amorphous Zn 41Sb 59 and crystalline Zn 4Sb 3 In: Chemistry of Materials. 2009 ; Vol. 21, No. 1. pp. 151-155.
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AU - Francisco, J. Garcia Garcia

AU - Häussermann, Ulrich

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AB - The alloy Zn 41Sb 59 was synthesized by high-pressure techniques and its bulk amorphous nature at ambient conditions confirmed by X-ray powder diffraction and electron microscopy studies. Electrical resistivity, thermopower, and thermal conductivity of Zn 41Sb 59 were measured in a temperature range from 6 to 350 K. Zn 41Sb 59 is a semiconductor and resistivity data suggest an activation energy of about 0.25 eV above 250 K. The thermopower is positive and increases with increasing temperature. Room-temperature values for the resistivity and thermopower are 8 Ω cm and 300 μV/K, respectively. The temperature dependence of the thermal conductivity is characteristic for amorphous solids and continuously increasing from 0.08 W/(m K) at 6 K to 0.19 W/(m K) at room temperature. Comparison of the thermal conductivity of Zn 41Sb 59 with the thermal lattice conductivity of the crystalline thermoelectric material β-Zn 4Sb 3 reveals a remarkable resemblance, justifying the classification of the latter as a phonon-glass material.

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