Title :
Skutterudite structure and thermoelectric property in the Pr-Fe-Ni-Sb system
Author :
Hasaka, M. ; Morimura, T. ; Tabata, S.
Author_Institution :
Dept. of Mater. Sci. & Eng., Nagasaki Univ., Japan
Abstract :
Filled skutterudite structure and thermoelectric property of PrfFe8-xNixSb24 (f=0∼2, x=0∼4) were investigated by means of X-ray diffraction, transmission electron microscopic observation, energy dispersive X-ray analysis and measurement of Seebeck coefficient. The number of Pr atoms filling void sites (f) increased with decreasing the number of Ni atoms (x). The lattice parameter increased and the shape of Sb-ring neared a square with increasing f and decreasing x. The Seebeck coefficient depended on f and x. The polarity of semiconductor changed with electron density.
Keywords :
Seebeck effect; X-ray chemical analysis; X-ray diffraction; crystal structure; iron compounds; lattice constants; nickel compounds; praseodymium compounds; thermoelectricity; transmission electron microscopy; voids (solid); Pr-Fe-Ni-Sb system; PrfFe8-xNixSb24; Seebeck coefficient; X-ray diffraction; energy dispersive X-ray analysis; lattice parameter; skutterudite structure; thermoelectric property; transmission electron microscopy; void sites; Atomic measurements; Dispersion; Energy measurement; Filling; Iron; Lattices; Shape; Thermoelectricity; Transmission electron microscopy; X-ray diffraction;
Conference_Titel :
Thermoelectrics, 2003 Twenty-Second International Conference on - ICT
Print_ISBN :
0-7803-8301-X
DOI :
10.1109/ICT.2003.1287461