The caesium-tellurium system in the region between 33 and 55 at.% Te h
as been investigated with X-ray diffraction and DSC. The existence of
the compounds Cs5Te3 and CsTe is demonstrated. The latter compound exh
ibits a structural transition at elevated temperature, as does the com
pound Cs2Te. The earlier reported compounds Cs3Te2 and Cs5Te4 do not e
xist.