SRTA4O11 - A RIETVELD REFINEMENT USING NEUTRON POWDER DIFFRACTION DATA

Authors
HEUNEN GWJC IJDO DJW HELMHOLDT RB
Citation
Gwjc. Heunen et al., SRTA4O11 - A RIETVELD REFINEMENT USING NEUTRON POWDER DIFFRACTION DATA, Acta crystallographica. Section C, Crystal structure communications, 51, 1995, pp. 1723-1725
Citations number
11
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
51
Year of publication
1995
Part
9
Pages
1723 - 1725
Database
ISI
SICI code
0108-2701(1995)51:<1723:S-ARRU>2.0.ZU;2-Z
Abstract
Rietveld refinement using neutron powder diffraction data for the low- temperature form of strontium tantalum oxide, SrTa4O11, resulted in R( wp) = 3.10%. The structure is of the CaTa4O11 type and consists of lay ers of Ta(2)O-7 pentagonal bipyramids sharing edges, as found in U3O8. Between the layers lie Sr atoms with distorted cubic coordination geo metry and Ta(1) atoms with distorted octahedral coordination geometry.