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Time Induced Changes in Phase Transition Behavior and Stability of Zn4Sb3

Published online by Cambridge University Press:  01 February 2011

Birgitte Lodberg Pedersen ,
Henrik Birkedal ,
Eiji Nishibori ,
Makoto Sakata  and
Bo Brummerstedt Iversen
Birgitte Lodberg Pedersen
Affiliation:
blp@chem.au.dk, University of Aarhus, Department of Chemistry and Interdisciplinary Nanoscience Center, Langelandsgade 140, 8000 Aarhus C, Aarhus, N/A, N/A, Denmark, +45 8942 4877
Henrik Birkedal
Affiliation:
hbirkedal@chem.au.dk, University of Aarhus, Department of Chemistry and Interdisciplinary Nanoscience Center, Langelandsgade 140, 8000 Aarhus C, Aarhus, N/A, N/A, Denmark
Eiji Nishibori
Affiliation:
eiji@mcr.nuap.nagoya-u.ac.jp, Nagoya University, Department of Applied Physics, Furo-cho, Chikusa, Nagoya 464-8603, Nagoya, N/A, N/A, Japan
Makoto Sakata
Affiliation:
a40366a@cc.nagoya-u.ac.jp, Nagoya University, Department of Applied Physics, Furo-cho, Chikusa, Nagoya 464-8603, Nagoya, N/A, N/A, Japan
Bo Brummerstedt Iversen
Affiliation:
bo@chem.au.dk, University of Aarhus, Department of Chemistry and Interdisciplinary Nanoscience Center, Langelandsgade 140, 8000 Aarhus C, Aarhus, N/A, N/A, Denmark
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Abstract

The stability of high performance thermoelectric Zn4Sb3 has been studied, by using synchrotron powder diffraction to establish differences in phase transition temperatures of two samples. High resolution multi temperature diffraction data has been collected, with a time interval of 13 months, and the phase transition temperature was determined based on the results of Rietveld refinements. The refinements show a difference in transition temperature from data collected the first time till data collected the second time. Furthermore the samples showed impurity peaks after being exposed to air for 13 months, indicating that the sample decomposes over time.

Keywords

thermoelectricityphase transformationstructural
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 945: Symposium FF – Materials and Basic Research Needs for Solar Energy Conversion , 2006 , 0945-FF07-05
Copyright
Copyright © Materials Research Society 2006

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