Affiliation:
1. Lomonosov Moscow State University
2. Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”
3. Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the RAS
4. HSE University
Abstract
Rare-earth molybdenum-containing oxides of nominal composition LixNd5 – xMo3O16 ± δ (x = 0, 0.05, 0.15, 0.25) with a fluorite-derived structure were first obtained as single crystals from a melt solution and by solid-phase synthesis in air as polycrystalline samples. The new phases were characterized by X-ray phase analysis, synchronous thermal analysis, and impedance spectroscopy. X-ray structural analysis showed that lithium atoms are localized near the positions of rare-earth cations. The chemical formula of the investigated single crystal was determined as Li0.216Nd4.784Mo3O14.1+δ. A small amount of lithium did not significantly affect the ability of the studied phases to undergo dissociative water absorption but led to a decrease in the total conductivity of lithium-doped LixNd5 – xMo3O16 ± δ ceramics.
Publisher
The Russian Academy of Sciences