What is it about?
Crystals with the La18W10O57-type structure were obtained by the self-flux method from high-temperature solutions in the Li2O–La2O3–WO3 system. The co-existence of two phases was revealed in one crystal (6H and 5H polytypes), with the space groups P62c and P321, which were different in the character of the superstructure ordering.
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Why is it important?
Our studies allowed relating the composition, structure, and properties of single crystals of rare-earth tungstates.
Perspectives
The possbility to carry out the targeted synthesis.
Nataliya E. Novikova
Shubnikov Institute of Crystallography, FSRC "Crystallography and Photonics" RAS
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This page is a summary of: Characteristic features of polytypism in compounds with the La18W10O57-type structure, Acta Crystallographica Section C Structural Chemistry, May 2019, International Union of Crystallography,
DOI: 10.1107/s2053229619006107.
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