Abstract
We have investigated Bi2O3-Eu2O3 binary system by doping with Eu2O3 in the composition range from 1 to 10 mole% via solid state reactions and succeeded to stabilize β-Bi2O3 phase which is metastable when pure. Stability of β-Bi2O3 polymorph was influenced by heat treatment temperature. Tetragonal type solid solution was obtained in 3–6 mole% addition range when annealed at 750°C and the range was 2–7 mole% when annealed at 800°C. We have also carried out investigations on lattice parameters, microstructural properties and elemental compositions of this β type solid solution for each doping ratio. Lattice parameters increased with amount of Eu2O3 addition. Our experimental observations strongly suggested that oxygen deficiency type non-stoichiometry is present in doped β type solid solutions.
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Turkoglu, O., Soylak, M. & Belenli, I. Synthesis and characterization of β type solid solution in the binary system of Bi2O3-Eu2O3 . Bull Mater Sci 25, 583–588 (2002). https://doi.org/10.1007/BF02707889
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DOI: https://doi.org/10.1007/BF02707889