Figure 3 c shows that the Seebeck coefficient α of the FeNb 0.8 Ti 0.2 Sb and Fe 1+ x Nb 0.75 Ti 0.25 Sb samples display an increasing trend with temperature, which is typical behavior for degenerate semiconductors.
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Enhancing the Figure of Merit of Heavy-Band Thermoelectric Materials Through Hierarchical Phonon Scattering.
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