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Backscattered electron images showing typical microstructures of NbCoSn based alloys fabricated by the OFZ-DS method and powder x-ray diffraction profiles: (a) , which is a three-phase material; (b) , which is a NbCoSn single-phase material; and (c) , which is a two-phase material.
Temperature dependence of (a) the thermoelectric power , (b) the electrical resistivity , and (c) the power factor , measured on as-grown NbCoSn based OFZ-DS alloys.
Temperature dependence of the thermal conductivity , measured on as-grown NbCoSn based OFZ-DS alloys. The carrier contribution and the lattice contribution were using the Wiedemann-Frantz law.
Temperature dependence of the dimensionless thermoelectric figure of merit, ZT, evaluated for OFZ-DS as-grown NbCoSn based alloys.
Nominal compositions and phase constitutions of as-grown NbCoSn based alloys.
Carrier concentration and Hall mobility of NbCoSn alloys evaluated by Hall measurements at room temperature.
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