Title :
Band structure calculations of Chevrel phase compounds using Korringa-Kohn-Rostoker method: TiMo/sub 6/Se/sub 8/, Zn/sub 2/Mo/sub 6/Se/sub 8/
Author :
Roche, C. ; Chevre, R. ; Tobola, J. ; Pecheur, P. ; Scherrer, H. ; Scherrer, S.
Author_Institution :
Lab. de Phys. des Mater., Ecole des Mines, Nancy, France
fDate :
Aug. 29 1999-Sept. 2 1999
Abstract :
New materials are being investigated for thermoelectric applications. Chevrel phases have an open lattice and should have low thermal conductivity. Thus they should be interesting for thermoelectric applications. We performed band structure calculations on several selenide compounds using the Korringa-Kohn-Rostoker method. TiMo/sub 6/Se/sub 8/ is found to be semimetallic while Zn/sub 2/Mo/sub 6/Se/sub 8/ is semiconducting with an indirect gap. We estimated the effectives masses for this latter compound.
Keywords :
KKR calculations; band structure; effective mass; molybdenum compounds; semiconductor materials; semimetals; thermal conductivity; thermoelectricity; titanium compounds; zinc compounds; Chevrel phase compounds; Korringa-Kohn-Rostoker method; TiMo/sub 6/Se/sub 8/; Zn/sub 2/Mo/sub 6/Se/sub 8/; band structure; effectives mass; indirect gap; semiconductor; semimetal; thermal conductivity; thermoelectric properties; Chromium; Crystallography; Electrons; Filling; Iron; Lattices; Linear discriminant analysis; Semiconductivity; Titanium; Zinc;
Conference_Titel :
Thermoelectrics, 1999. Eighteenth International Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-5451-6
DOI :
10.1109/ICT.1999.843463