Investigation of the cationic distribution within the lattice of a series of niobates with tetragonal tungsten bronze structure

Single Crystals of the series K 3 Sr 2 LnNb 10 O 30 (Ln = Lanthanide) have been grown by two different techniques: micro-pulling down and solid state growth. The cationic distribution within the three large cavities of the lattice, determined from the crystal structure resolution, shows that the cry...

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Bibliographic Details
Published in:Journal of electroceramics 2008-12, Vol.21 (1-4), p.719-723
Main Authors: Lahmar, A., Zriouil, M., Ehrenberg, H., Antic-Fidancev, E., Ganschow, S., Elouadi, B.
Format: Article
Language:English
Subjects:
BRONZES
Cationic
CERAMICS
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Condensed matter: structure, mechanical and thermal properties
CRYSTAL STRUCTURE
Crystallography and Scattering Methods
Disorders
Electrochemistry
Exact sciences and technology
Glass
HOLES
Inorganic compounds
Lattices
LATTICES (CRYSTAL)
Materials Science
Natural Materials
Niobates
Optical and Electronic Materials
Physics
Salts
SINGLE CRYSTALS
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Tungsten bronze
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Summary:Single Crystals of the series K 3 Sr 2 LnNb 10 O 30 (Ln = Lanthanide) have been grown by two different techniques: micro-pulling down and solid state growth. The cationic distribution within the three large cavities of the lattice, determined from the crystal structure resolution, shows that the crystal-chemical formula is depending on the route of preparation. A spectroscopic study has evidenced a broadening of the emission peaks which is also compatible with a disorder distribution of Ln 3+ ions over 12- and 15-fold cavities.
ISSN:1385-3449
1573-8663
DOI:10.1007/s10832-007-9257-5