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Mechanical Alloying Synthesis of K2Bi8Se13– type Solid Solutions

Published online by Cambridge University Press:  01 February 2011

Nikolaos Toumpas ,
Theodora Kyratsi ,
Euripides Hatzikraniotis ,
Andreas Tsiappos ,
Eleni Pavlidou ,
Konstantinos M. Paraskevopoulos ,
Duck Young Chung  and
Mercouri G. Kanatzidis
Nikolaos Toumpas
Affiliation:
unknown@com.com, University of Cyprus, Department of Mechanical & Manufacturing Engineering, Nicosia, 1678, Cyprus
Theodora Kyratsi
Affiliation:
kyratsi@ucy.ac.cy, University of Cyprus, Department of Mechanical & Manufacturing Engineering, Nicosia, 1678, Cyprus
Euripides Hatzikraniotis
Affiliation:
evris@physics.auth.gr, Aristotle University of Thessaloniki, Department of Physics, Thessaloniki, 54124, Greece
Andreas Tsiappos
Affiliation:
unknown@com.com, University of Cyprus, Department of Mechanical & Manufacturing Engineering, Nicosia, 1678, Cyprus
Eleni Pavlidou
Affiliation:
unknown@com.com, Aristotle University of Thessaloniki, Department of Physics, Thessaloniki, 54124, Greece
Konstantinos M. Paraskevopoulos
Affiliation:
kpar@auth.gr, Aristotle University of Thessaloniki, Department of Physics, Thessaloniki, 54124, Greece
Duck Young Chung
Affiliation:
dychung@anl.gov, Argonne National Laboratory, Materials Science Division, Argonne, IL, 60439, United States
Mercouri G. Kanatzidis
Affiliation:
m-kanatzidis@northwestern.edu, Argonne National Laboratory, Materials Science Division, Argonne, IL, 60439, United States
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Abstract

Solid solutions of β-K2Bi8-xSbxSe13 are an interesting series of materials for thermoelectric investigations due to their very low thermal conductivity and highly anisotropic electrical properties. In this work, we aimed to synthesize solid solutions of β-K2Bi8-xSbxSe13 type materials using powder techniques. The synthesis was based on mechanical alloying as well as sintering procedures. The products were studied in terms of structural features, composition and purity with powder x-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. Preliminary results on thermoelectric properties as well as IR reflectivity measurements are presented.

Keywords

mechanical alloyingsinteringthermoelectricity
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1044: Symposium U – Thermoelectric Power Generation , 2007 , 1044-U03-07
Copyright
Copyright © Materials Research Society 2008

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References

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