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New quenched-in fluorite-type materials in the Bi2O 3-La2O3-PbO system: Synthesis and complex phase behaviour up to 750 °c

Webster, N.A.S., Hartlieb, K.J., Saines, P.J., Ling, C.D., Lincoln, F.J. (2011) New quenched-in fluorite-type materials in the Bi2O 3-La2O3-PbO system: Synthesis and complex phase behaviour up to 750 °c. Materials Research Bulletin, 46 (4). pp. 538-542. ISSN 00255408 (ISSN). (doi:10.1016/j.materresbull.2010.12.035) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Abstract

New quenched-in fluorite-type materials with composition (BiO 1.5)0.94-x(LaO1.5)0.06(PbO) x, x = 0.02, 0.03, 0.04 and 0.05, were synthesised by solid state reaction. The new materials undergo a number of phase transformations during heating between room temperature and 750 °C, as indicated by differential thermal analysis. Variable temperature X-ray diffraction performed on the material (BiO1.5)0.92(LaO1.5) 0.06(PbO)0.02 revealed that the quenched-in fcc fluorite-type material first undergoes a transformation to a β-Bi 2O3-type tetragonal phase around 400 °C. In the range 450-700 °C, α-Bi2O3-type monoclinic, Bi 12PbO19-type bcc and β1/β 2-type rhombohedral phases, and what appeared to be a ε-type monoclinic phase, were observed, before a single-phase fluorite-type material was regained at 750 °C. © 2010 Elsevier Ltd © 2011 Elsevier Ltd. All rights reserved.

Item Type: Article
DOI/Identification number: 10.1016/j.materresbull.2010.12.035
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Mater Res Bull [Field not mapped to EPrints] AD - School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, Crawley, WA 6009, Australia [Field not mapped to EPrints] AD - School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia [Field not mapped to EPrints] AD - CSIRO Process Science and Engineering, Box 312, Clayton South, VIC 3169, Australia [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: A. Ceramics, A. Oxides, C. X-ray diffraction, D. Phase transitions, A. Ceramics, A. Oxides, D. Phase transitions, Monoclinic phase, New material, Phase behaviour, Phase transformation, Rhombohedral phasis, Room temperature, Tetragonal phase, Variable temperature, Ceramic materials, Differential thermal analysis, Diffraction, Fluorspar, Lead oxide, Solid state reactions, Synthesis (chemical), X ray diffraction, X rays, Phase transitions
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Paul Saines
Date Deposited: 07 Oct 2015 10:09 UTC
Last Modified: 29 May 2019 16:04 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50730 (The current URI for this page, for reference purposes)
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