Abstract
Cubic fluorite related Bi1−x LnxO1.5 (Ln = Y and LaYb) phases are synthesized by solution-combustion method using glycine as the fuel. The cubic fluorite phase is stabilized with 25 mole% of rare earth cations. The lattice parameter of cubic phase increases linearly with size of the lanthanide ion. The synthesized powders are nano-metric in size and exhibit excellent compactability and reach 98% densification even on short period of sintering. The oxides with relatively larger cations Nd, Sm, Eu, Pr and Gd with 25 mole% composition transform to rhombohedral structure while others retain cubic upon sintering. All the phases show high oxide-ion conductivity and the values obtained are in good agreement with the reported values.
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Bellakki, M.B., Prakash, A.S., Shivakumara, C. et al. Solution-combustion synthesis of Bi1−x Ln x O1.5 (Ln = Y and La-Yb) oxide ion conductors. Bull Mater Sci 29, 339–345 (2006). https://doi.org/10.1007/BF02704133
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DOI: https://doi.org/10.1007/BF02704133