Authors: H Yin M Christensen BL Pedersen E Nishibori S Aoyagi BB Iversen
Publish Date: 2009/12/30
Volume: 39, Issue: 9, Pages: 1957-1959
Abstract
The thermal stability of the thermoelectric Zn4Sb3 has been investigated by synchrotron power diffraction measurements in the temperature range of 300 K to 625 K in a capillary sealed under Ar Data were also collected in air on a 1 Cddoped sample Rietveld refinements of the data indicate that a variety of impurity phases are formed After heat treatment more than 85 of the Zn4Sb3 phase remains in the 1 Cddoped sample heated in air and 97 remains in the undoped Zn4Sb3 heated in Ar These stabilities are better than those previously observed in pure samples heated in air This suggests that doping as well as oxygen or oxidation impurities play important roles in the thermal stability of this compound
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