DocumentCode :
2215031
Title :
Assessing the role of the filler atoms on the thermal conductivity of La-filled skutterudites
Author :
Fowler, G. ; Nolas, G.S.
Author_Institution :
Dept. of Phys., South Florida Univ., Tampa, FL, USA
fYear :
2005
fDate :
19-23 June 2005
Firstpage :
4446
Lastpage :
4448
Abstract :
There has been substantial effort in investigating the thermal transport in filled skutterudites over the past decade in order to optimize their thermoelectric properties. This effort has resulted in the accumulation of a large amount of experimental data in the literature. We have tapped into this wealth of data and have begun an assessment of the role of the filler atoms, and dopants, on point defect and resonance scattering. We investigate the lattice thermal conductivity of lanthanum-filled skutterudites at different lanthanum concentrations using the Debye model and incorporating boundary, point defect, Umklapp and resonance scattering mechanisms.
Keywords :
antimony alloys; cobalt alloys; lanthanum alloys; point defect scattering; thermal conductivity; thermoelectricity; tin alloys; umklapp process; CoSb3; Debye model; La-filled skutterudites; La0.05Co4Sb12; La0.23Co4Sb12; La0.31Co4Sn1.48Sb11.2; La0.75Co4Sn2.58Sb9.78; La0.90Co4Sn2.44Sb10.03; Umklapp mechanism; dopants; filler atoms; point defect; resonance scattering; thermal conductivity; Acoustic scattering; Conducting materials; Lanthanum; Lattices; Phonons; Resonance light scattering; Temperature; Thermal conductivity; Thermoelectric devices; Thermoelectricity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Thermoelectrics, 2005. ICT 2005. 24th International Conference on
ISSN :
1094-2734
Print_ISBN :
0-7803-9552-2
Type :
conf
DOI :
10.1109/ICT.2005.1519982
Filename :
1519982
Link To Document :
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