In addition to the binary semiconductors combining elements from Groups II, III, V and VI, there also exist other materials that adopt different structures using the transition metals.
The following materials all have the half-Heusler structure. This is a cubic structure and consists of four interpenetrating FCC lattices. Three of the lattice points are occupied by one of the elements whilst the fourth lattice consists of vacancies.
- CoTiSb 
- NiScSb 
- NiTiSn 
- LiBeN 
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