A new solution series of bismuth vanadate of the molecular formula

Bi4CdxV2−xO11−δ; 0 ≤ x ≤ 0.25 was synthesized by solid state reaction, via

substitution of Cd for V in the parent compound, Bi4V2O11−δ. The sample

characterization and study of the phase transition changes were performed by using

XRD, FT-IR and DSC measurements. It was found that the ionic conducting,

tetragonal γ-phase could effectively be stabilized to room temperature for x = 0.175

solid solution. Impedance spectroscopy measurements proved that the oxide ionic

conductivity predominantly arises from the grain contribution. In addition, highest ionic conductivity (~1.30 x 10−4S/cm at 420C) was observed for x = 0.20 solid

solution with less pronounced thermal hysteresis.

Study of Phase Transition and Ionic Conductivity Changes of Cd-Substituted

Bi4V2O11−δ. S.Beg, N.A.S.Al-Areqi, S.Haneef: Solid State Ionics, 2008, 179[39],

2260-4