Crystal structure of La{sub 2}Mo{sub 2}O{sub 9} single crystals doped with bismuth

Journal Article · Thu Jul 15 04:00:00 EDT 2010 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774510040085· OSTI ID:22051189

Verin, I A; Sorokina, N I; Krasil'nikova, A E ^[1]; Voronkova, V I ^[2]

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1. Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)
2. Moscow State University, Faculty of Physics (Russian Federation)

Precision X-ray diffraction studies of La{sub 2-x}Bi{sub x}Mo{sub 2}O{sub 9} (x = 0.04, 0.06, and 0.18) single crystals are performed. It is found that in the compounds doped with bismuth, analogously with the structure of the metastable {beta}{sub ms} phase of pure La{sub 2}Mo{sub 2}O{sub 9} (LM), the La, Mo1, and O1 atoms deviate from the threefold axis on which they are located in the high-temperature {beta} phase. It is shown that bismuth atoms substitute for part of lanthanum atoms and occupy a position at the threefold axis in the neighborhood of the split lanthanum position. The implantation of bismuth atoms in the LM structure results in the return of a part of the molybdenum atoms to the position at the threefold axis. The occupancy of this position is equal to the occupancy of the bismuth atomic position.

• OSTI ID: 22051189
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 4 Vol. 55; ISSN CYSTE3; ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCURACY
BISMUTH
CRYSTAL STRUCTURE
DOPED MATERIALS
LANTHANUM COMPOUNDS
MOLYBDATES
MONOCRYSTALS
X-RAY DIFFRACTION