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    Ge-Doped bismuth vanadate solid electrolytes: synthesis, phase diagram and electrical properties by Lee, Chnoong Kheng, Tan, Meow Peng, West, Anthony R.

    Published 1994
    “…The location of Ge-doped Bi4V2O11 solid solutions in the Bi2O3-V2O5-GeO 2 ternary phase diagram has been determined; a more detailed study of the Bi4V2O11-Bi2GeO5 join has been carried out and the phase diagram presented. The main mechanisms for solid solution formation appear to involve substitution of both Ge and Bi into V sites, giving rise to the general formula Bi4+yV 2-2x-yGe2xO11-x-y: -0.04<y<0.23; 0<x<0.45 (not all values of x and y in these ranges). …”
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