The BIZNVOX solid solution domain, stable at room temperature, has been det
ermined. alpha-, beta- and gamma -type compounds can be stabilized dependin
g on the x and y values of the general Bi-2(V1 - x - yZnxBiy)O-z formula. T
he alpha- and beta -type phases exhibit incommensurate modulations studied
by X-ray powder diffraction. The lock-in of their wave vectors on the three
-fold and two-fold superstructures of the undoped alpha- and beta -Bi4V2O11
, respectively, is clearly evidenced. SAEDand HREM observations reveal very
complex disorder correlated with the attractive oxide ion conductivity of
these materials.