The structural properties of the oxygen conducting δ phase of Bi₂O₃

Structurally unstableAIIIBiO3perovskites are predicted to be topological insulators but their stable structural forms are trivial band insulators

“…YBiO 3 [31][32][33] and LaBiO 3 [34,35] form in oxygen-defective fluorite phases in which the Bi and Y (La) atoms randomly occupy the cation sub-lattice. We used anion-defective fluorite structures with randomized cation configurations (a special quasi-random structure [36] (SQS) in the case of YBiO 3 ) to model the random cation distribution on these lattices.…”

Stability and range of the type II Bi 1−x W x O 1.5+1.5x solid solution

“…δ-Bi2O3 exhibits a simple cubic fluorite type 2/17 structure (space group 3 ̅ , a = 5.66 Å) with 25% oxygen vacancies randomly distributed over the anion sublattice [1][2][3]. Great efforts have gone into stabilising the δ-Bi2O3 structure down to lower temperatures while maintaining large parts of its conductivity by doping with rare earths and higher valent transition metal cations such as Nb 5+ , Ta 5+ , Cr 6+ , Mo 6+ and W…”

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

“…A constant temperation patterns that 8-Bi 2 0 3 has a highly defective ture of 65°C in the stirred solution was maintained fluorite structure where 43% of the regular anion during electrodeposition. sites are occupied, in addition to 8% occupancy of a Electrodeposition was performed with an EG and second site displaced from the regular anion position G Princeton Applied Research Model 273A poten- [12]. The unusually high ionic conductivity of 8-tiostat/galvanostat.…”