Title :
Galvanomagnetic and Thermoelectric Properties of R3Cu3Sb4 Compounds
Author :
Candolfi, C. ; Lenoir, B. ; Dauscher, A. ; Da Ros, V. ; Malaman, B. ; Bellouard, C. ; Hejtmanek, J.
Author_Institution :
Lab. de Phys. des Materiaux, Ecole Nationale Superieure des Mines de Nancy
Abstract :
Zintl phases recently received a great attention for their thermoelectric potential and interesting results were reported on Yb14MnSb11 compounds [Brown, et al., 2006]. In this paper, we present results obtained with other Zintl phases, Y1.5Gd1.5Cu3Sb4, Y3 Cu3Sb4 and Gd3Cu3Sb 4. They were synthesized in an induction furnace, followed by consequent annealing treatments. The crystallographic structure was checked by X-ray diffraction analysis. Resistivity and thermopower measurements were performed over a large temperature range going from 2 to 550 K. The low temperature thermal conductivity dependence of these materials was also determined between 10 to 300 K. Finally, the thermoelectric potential of these polycrystalline samples is discussed
Keywords :
X-ray diffraction; annealing; antimony compounds; copper compounds; crystal structure; electrical resistivity; gadolinium compounds; galvanomagnetic effects; thermal conductivity; thermoelectricity; yttrium compounds; 10 to 300 K; 2 to 550 K; Gd3Cu3Sb4; X-ray diffraction; Y1.5Gd1.5Cu3Sb4; Y3Cu3Sb4; annealing treatments; crystallographic structure; electrical resistivity; galvanomagnetic property; induction furnace; thermal conductivity; thermoelectric potential; thermoelectric property; thermopower measurements; zintl phases; Annealing; Conductivity measurement; Crystallography; Furnaces; Performance evaluation; Temperature dependence; Temperature distribution; Thermal conductivity; Thermoelectricity; X-ray diffraction;
Conference_Titel :
Thermoelectrics, 2006. ICT '06. 25th International Conference on
Conference_Location :
Vienna
Print_ISBN :
1-4244-0811-3
Electronic_ISBN :
1094-2734
DOI :
10.1109/ICT.2006.331231
