Nanostructuring and its influence on the thermoelectric properties of the AgSbTe2-SnTe quaternary system

J. Androulakis, R. Pcionek, E. Quarez, O. Palchik, H. Kong, C. Uher, J. J. Dangelo, T. Hogan, X. Tang, T. Tritt, Mercouri G Kanatzidis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The structural and thermoelectric properties of the AgSbTe2-SnTe quaternary system were studied. Powder averaged x-ray diffraction of Ag 0.85SnSb1.15Tea indicates a cubic NaCl-type structure in contrast with the single crystal refinements, which point towards tetragonal symmetry. Furthermore, high-resolution electron microscopy imaging revealed the system to be a nano-composite formed by thermodynamically driven compositional fluctuations rather than a solid solution as it was viewed in the past. The lattice thermal conductivity attains very low values, which is in accord with recent theories on thermal transport in heterogeneous systems. The charge transport properties of the system exhibit a rich physical behavior highlighted in the coexistence of an almost metallic carrier concentration (∼5 ×1021 cm-3) with a large thermoelectric power response of ∼160 μVYK at 650 K. This is attributed to a heavy hole effective mass that is almost six times that of the electron rest mass.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages187-194
Number of pages8
Volume886
Publication statusPublished - 2006
Event2005 Materials Research Society Fall Meeting - Boston, MA, United States
Duration: Nov 28 2005Dec 1 2005

Other

Other2005 Materials Research Society Fall Meeting
CountryUnited States
CityBoston, MA
Period11/28/0512/1/05

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High resolution electron microscopy
Thermoelectric power
Crystal symmetry
Powders
Transport properties
Carrier concentration
Charge transfer
Solid solutions
Thermal conductivity
Diffraction
Single crystals
Imaging techniques
X rays
Electrons
Composite materials
Hot Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Androulakis, J., Pcionek, R., Quarez, E., Palchik, O., Kong, H., Uher, C., ... Kanatzidis, M. G. (2006). Nanostructuring and its influence on the thermoelectric properties of the AgSbTe2-SnTe quaternary system. In Materials Research Society Symposium Proceedings (Vol. 886, pp. 187-194)

Nanostructuring and its influence on the thermoelectric properties of the AgSbTe2-SnTe quaternary system. / Androulakis, J.; Pcionek, R.; Quarez, E.; Palchik, O.; Kong, H.; Uher, C.; Dangelo, J. J.; Hogan, T.; Tang, X.; Tritt, T.; Kanatzidis, Mercouri G.

Materials Research Society Symposium Proceedings. Vol. 886 2006. p. 187-194.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Androulakis, J, Pcionek, R, Quarez, E, Palchik, O, Kong, H, Uher, C, Dangelo, JJ, Hogan, T, Tang, X, Tritt, T & Kanatzidis, MG 2006, Nanostructuring and its influence on the thermoelectric properties of the AgSbTe2-SnTe quaternary system. in Materials Research Society Symposium Proceedings. vol. 886, pp. 187-194, 2005 Materials Research Society Fall Meeting, Boston, MA, United States, 11/28/05.
Androulakis J, Pcionek R, Quarez E, Palchik O, Kong H, Uher C et al. Nanostructuring and its influence on the thermoelectric properties of the AgSbTe2-SnTe quaternary system. In Materials Research Society Symposium Proceedings. Vol. 886. 2006. p. 187-194
Androulakis, J. ; Pcionek, R. ; Quarez, E. ; Palchik, O. ; Kong, H. ; Uher, C. ; Dangelo, J. J. ; Hogan, T. ; Tang, X. ; Tritt, T. ; Kanatzidis, Mercouri G. / Nanostructuring and its influence on the thermoelectric properties of the AgSbTe2-SnTe quaternary system. Materials Research Society Symposium Proceedings. Vol. 886 2006. pp. 187-194
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