NOTES
"44
2.80 A. There does appear to be n valence change iri Te involved in the transition. The transition from CB to C2 type is not a simple one. Examination of the structures leads one to the conclusion t h a t the transition probably involves a displacement in the (11.1) planes as well as motion perpendicular to these planes. The transition also involves an appreciable contraction. The phase with the higher density (C2) is the one which is superconducting a t 1.,jl"I
