Anionic conduction properties of the fluorite-type phase in the Bi2O3-Y2O3-PbO system

New Bi–Ln–V–O Anionic Conductors withδ-Bi2O3Fluorite-Type Structure (Ln=Y, Sm, Eu, Gd, Tb, Dy, Er, Yb)

“…The influence of the nature of the doping cation has also been examined. For both stable and metastable phases, the conductivity of fixed bismuth content samples increases with the proportion of Pb> cations (11,17). This is mainly due to the higher polarizability of Pb> than that of Ca> or¸n>.…”

The structure and conductivity of new fluorite-type Bi2O3–Er2O3–PbO materials

“…Examples include ternary oxide systems of Bi-Dy-W [7], Bi-Er-W [8], Bi-Ln-Te (Ln = La, Sm, Gd, Er) [9], Bi-Y-Nb [10] and Bi-Ln-V (Ln = La-Yb) [11]. PbO has also been used as a "co-stabiliser" in the Bi 2 O 3 -CaO-PbO and Bi 2 O 3 -Y 2 O 3 -PbO systems [12,13]. In both systems an extensive fluorite-type solid solution was found, the materials were highly conductive, and ionic transfer numbers between 500 and 800°C were close to unity.…”

Crystal structures and conductivity properties of MBi6V2O15 family type compounds (M=Pb, Sr, Ca, Cd, Na0.5Bi0.5)

“…With the aim of obtaining structurally related phases, keeping the interestingly high conducting properties, or reaching even better ones at temperatures as low as possible, numerous investigations of bismuth rich domains in binary systems [4][5][6][7][8][9][10][11][12][13][14], ternary systems [15] or quaternary ones [16] were carried out. Many δ-related phases could be stabilized at room temperature.…”