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Rietveld refinements of a new solid solution Ba(3−x)Srx(PO4)2 (0≤x≤3)

Published online by Cambridge University Press:  06 March 2012

B. Manoun ,
L. Popović ,
D. De Waal  and
S. M. C. Verryn
B. Manoun
Affiliation:
Department of Chemistry, University of Pretoria, 0002 Pretoria, South Africa
L. Popović
Affiliation:
Department of Chemistry, University of Pretoria, 0002 Pretoria, South Africa
D. De Waal*
Affiliation:
Department of Chemistry, University of Pretoria, 0002 Pretoria, South Africa
S. M. C. Verryn
Affiliation:
Department of Geology (XRD and XRF Laboratory), University of Pretoria, 0002 Pretoria, South Africa
*
a)Author to whom correspondence should be addressed. Electronic mail: ddewaal@postino.up.ac.za
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Abstract

Ba(3−x)Srx(PO4)2 orthophosphates (0≤x≤3) have been prepared by solid state reaction. The final temperature was 1000°C. The X-ray diffraction analyses show the existence of a continuous solid solution. Ba(3−x)Srx(PO4)2 orthophosphates (0≤x≤3) crystallize in the hexagonal system with the space group R3m. Their structure is based on a three-dimensional framework constructed of infinite layers of Ba1/Sr1O12 linked and parallel to infinite layers of Ba2/Sr2O10 polyhedra and PO4 tetrahedra.

Keywords

orthophosphatesX-ray diffractionRietveldBa(3−x)Srx(PO4)2
Type
Technical Articles
Information
Powder Diffraction , Volume 18 , Issue 2 , June 2003 , pp. 122 - 127
Copyright
Copyright © Cambridge University Press 2005

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References

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