We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Growth and Structure of Rare-Earth Molybdate Crystals Na 0.65 La 4.35 Mo 3 O 15.81±δ F 0.07±ε.
- Authors
Novikova, Nataliya E.; Orlova, Ekaterina I.; Antipin, Alexander M.; Sorokin, Timofei A.; Kvartalov, Vladimir B.; Kharitonova, Elena P.; Sorokina, Nataliya I.; Alekseeva, Olga A.; Voronkova, Valentina I.
- Abstract
Rare-earth sodium- and fluorine-substituted molybdates with the Na0.65La4.35Mo3O15.81±δF0.07±ε composition were synthesized for the first time as single crystals. An accurate X-ray diffraction analysis of three samples at room temperature showed that the obtained crystals are isostructural to undoped cubic compounds of the Ln5Mo3O16+δ family (space group Pn 3 ¯ n). Sodium cations partially occupy one of the two lanthanum positions and center the more distorted LaO8 polyhedra, while fluorine anions occupy over-stoichiometric oxygen positions in the vast interstices (cavities) of the structure. The partial substitution of fluorine atoms for oxygen ones affects the transport characteristics of compounds by activating the oxygen atoms in the anionic subsystem due to the effect of supplementary electrostatic repulsion between anions of different types.
- Subjects
CRYSTALS; MOLYBDENUM; SINGLE crystals; OXYGEN compounds; SPACE groups; MOLYBDATES
- Publication
Crystals (2073-4352), 2023, Vol 13, Issue 9, p1293
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst13091293