Phases investigation in the antimony doped Bi2O3 system

The influence of Sb ions, introduced as dopants in alpha-Bi2O3, on the structure of the oxide polymorph forms obtained at high temperature is studied. The structural changes of alpha-Bi2O3 for compositions in the system Bi2-xSbxO3 (x = 0, 0.05, 0.1, 0.15, 0.2), at different heat treatment temperatur...

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Published inJournal of the European Ceramic Society Vol. 24; no. 6; pp. 1295 - 1299
Main Authors Fruth, V., Popa, M., Berger, D., Ionica, C.M., Jitianu, M.
Format Journal Article
LanguageEnglish
Published 01.01.2004
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Summary:The influence of Sb ions, introduced as dopants in alpha-Bi2O3, on the structure of the oxide polymorph forms obtained at high temperature is studied. The structural changes of alpha-Bi2O3 for compositions in the system Bi2-xSbxO3 (x = 0, 0.05, 0.1, 0.15, 0.2), at different heat treatment temperatures were analysed by thermal analysis, powder XRD and IR transmission spectroscopy. The structure tended to change to a higher symmetry (monoclinic to tetragonal to cubic) as the antimony content increased and the temperature reached 850 C. The presence of Sb2O3 in the Bi2O3 oxide system promotes an oxygen release from the oxide and enlarges the stabilisation domain of the delta-phase. 11 refs.
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ISSN:0955-2219
DOI:10.1016/S0955-2219(03)00506-5