Experimental and computational study of the role of defects and secondary phases on the thermoelectric properties of TiNiSn (0 ≤≤ 0.12) half Heusler compounds.

The half Heusler TiNiSn compound is a model system for understanding the relationship among structural, electronic, microstructural and thermoelectric properties. However, the role of defects that deviate from the ideal crystal structure is far from being fully described. In this work, TiNiSn alloys (= 0, 0.