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In an effort to further understand the influence of Nd on the thermoelectric properties of the binary compound CoSb3 and try to optimize them through doping, we prepared and investigated NdxCo4-yNiySb12 compounds. The samples have been prepared by a conventional metallurgical route. Structural analysis has been carried out by X-ray diffraction. The chemical composition and micro-homogeneity have been...
Iron disilicide based thermoelectric materials with the designed composition Fe1-xMnxAlySi2-y (x = 0.06, 0.08; y = 0, 0.02, 0.04) were prepared by rapid solidification and hot pressing (1193K, 100 MPa, 30 minutes). The effects of Mn+Al double doping were investigated. The influence of pre-annealing on the microstructure and the transport properties were also studied. X-ray diffraction and scanning...
The addition of ceramic inclusion to a thermoelectric matrix could reduce the thermal conductivity of the composite, which is attributed to phonon scattering on the generated interfaces. The electrical conductivity of the composite, however, could also be reduced due to additional charge carrier scattering. The performance of the thermoelectric composite, therefore, depends on the resulting ratio...
Nanostructuring of unfilled CoSb3 Skutterudites has been successful in reducing the thermal conductivity of these materials [Toprak, et al., 2004]. First measurements on a mixture of the Skutterudite and an inert ceramic with particle sizes in the nanometer range have shown promising results for a further reduced thermal conductivity by decorating the grain boundaries of the thermoelectric material...
The scanning Potential Seebeck Microscope (PSM) turned out to be a suitable tool to investigate material properties not only for thermoelectrics. Numerous cooperation and projects which were successfully accomplished by DLR and Panco and their national and international partners have shown the wide spectrum of application for this measurement instrument. The continuing extension of applications and...
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