Structural and dynamical studies of δ-Bi2O3 oxide ion conductors. I. The structure of (Bi2O3)1-x(Y2O3)x as a function of x and temperature

We report the results of both Bragg and diffuse neutron scattering studies of the superionic solid solution, (Bi2O3)1-x(Y2O3)x. The Bragg data for polycrystalline samples show that the strutural features observed previously in (Bi2O3)0.73(Y2O3)0.27 are present across the entire range of the solid solution, 0.25