Preparation of the Bi₂O₃-based Fluorite-type Solid Solutions by Mechanical Alloying

A mechanical alloying technique was applied to the mixtures of(Bi203)o75(Y203)o25and (Bi203)Nb205)2tosynthesizesolidsolutionsofthenuorite-typestructureAmoIphization occurred fbr(Bi203)o75(Y203)o25 while the fluorite-type phase is directly obtained fbr (Bi203)o8Nb205)o20by ball milling fbr l20hThe amorphous sample of(Bi203)o75(Y203)o25 tumed into the fluorlte-type phase under the condition of500C and lO minutes annealing which was much more mild as compared to that ofthe conventional solid state reaction