title: Structure of fluorite-like compound based on Nd₅Mo₃O₁₆ with lead partly substituting for neodymium.
abstract: A single crystal of Nd5Mo3O16 with lead partly substituting for neodymium, which has a fluorite-like structure, was studied by precision X-ray diffraction, high-resolution transmission microscopy and EDX microanalysis. The crystal structure is determined in the space group Pn3¯n. It was found that the Pb atoms substitute in part for Nd atoms in the structure and are located in the vicinity of Nd2 positions. Partial substitutions of Mo cations for Nd positions and of Nd for Mo positions in crystals of the Ln5Mo3O16 oxide family are corroborated by X-ray diffraction for the first time. The first experimental verification of the location of an additional oxygen ion in the voids abutting MoO4 tetrahedra was obtained.
authors.affiliation: Shubnikov Institute of Crystallography RAS, Leninsky pr., 59, Moscow 119333, Russian Federation.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Antipin
authors.affiliation: Shubnikov Institute of Crystallography RAS, Leninsky pr., 59, Moscow 119333, Russian Federation.
authors.forename: Natalia I
authors.initials: NI
authors.lastname: Sorokina
authors.affiliation: Shubnikov Institute of Crystallography RAS, Leninsky pr., 59, Moscow 119333, Russian Federation.
authors.forename: Olga A
authors.initials: OA
authors.lastname: Alekseeva
authors.affiliation: Shubnikov Institute of Crystallography RAS, Leninsky pr., 59, Moscow 119333, Russian Federation.
authors.forename: Alexandra N
authors.initials: AN
authors.lastname: Kuskova
authors.affiliation: Physical Department, Moscow State University, Leninskie Gory, 1, Moscow 119991, Russian Federation.
authors.forename: Elena P
authors.initials: EP
authors.lastname: Kharitonova
authors.affiliation: Physical Department, Moscow State University, Leninskie Gory, 1, Moscow 119991, Russian Federation.
authors.forename: Ekaterina I
authors.initials: EI
authors.lastname: Orlova
authors.affiliation: Physical Department, Moscow State University, Leninskie Gory, 1, Moscow 119991, Russian Federation.
authors.forename: Valentina I
authors.initials: VI
authors.lastname: Voronkova
keywords: EDX microanalysis; electron-ion conductors; high-resolution transmission microscopy; precision X-ray diffraction