Crystal structure of the 'mixed-layer' Aurivillius phase Bi{sub 5}TiNbWO{sub 15}

Journal Article · Sat Jan 15 04:00:00 EST 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2004.08.021· OSTI ID:20721683

Snedden, Alan ^[1]; Charkin, Dmitri O ^[2]; Dolgikh, Valeriy A ^[3]; Lightfoot, Philip ^[1]

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1. School of Chemistry, University of St Andrews, St Andrews, Purdie Building, Fife, Scotland, KY16 9ST (United Kingdom)
2. Department of Materials Sciences, Moscow State University, 119992 Moscow GSP-2 (Russian Federation)
3. Department of Chemistry, Moscow State University, 119992 Moscow GSP-2 (Russian Federation)

The crystal structure of the Aurivillius phase Bi{sub 5}TiNbWO{sub 15} has been analyzed in detail using powder X-ray and neutron diffraction. The structure can be described as a regular intergrowth of alternating single and double perovskite-like layers sandwiched between fluorite-like bismuth oxide layers, such that the layer sequence is ... [WO{sub 4}]-[Bi{sub 2}O{sub 2}]-[BiTiNbO{sub 7}]-[Bi{sub 2}O{sub 2}] .... There is complete ordering of tungsten within the B sites of the single perovskite layer, so that the structure can be described as a direct intergrowth of the 'component' Aurivillius phases Bi{sub 2}WO{sub 6} and Bi{sub 3}TiNbO{sub 9}. At 25 deg. C the structure adopts the polar orthorhombic space group I2cm, a=5.4231(2)A, b=5.4027(2)A, c=41.744(1)A.

• OSTI ID: 20721683
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BISMUTH OXIDES
LAYERS
NEUTRON DIFFRACTION
NIOBIUM COMPOUNDS
ORTHORHOMBIC LATTICES
PEROVSKITE
SPACE GROUPS
TITANIUM COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS
X-RAY DIFFRACTION