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

fYear

2003

fDate

17-21 Aug. 2003

Firstpage

109

Lastpage

112

Abstract

Filled skutterudite structure and thermoelectric property of Pr_fFe_8-xNi_xSb₂₄ (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; Pr_fFe_8-xNi_xSb₂₄; 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 2003 Twenty-Second International Conference on - ICT

Print_ISBN

0-7803-8301-X

Type

conf

DOI

10.1109/ICT.2003.1287461

Filename

1287461