Synthesis and electrical properties of Arrival's phases in the Bi{sub 2}MoO{sub 6}-Bi{sub 2}VO{sub 5.5} system

Journal Article · Thu Mar 15 04:00:00 EDT 2007 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774507020253· OSTI ID:21090939

Kharitonova, E P; Rudnitskaya, O G ^[1]; Sorokina, N I; Verin, I A ^[2]

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

To search for new oxygen conductive phases, a series of Bi{sub 2}V{sub 1-x}Mo{sub x}O{sub 5.5+x/2} ceramic samples have been synthesized in which the extreme compositions Bi{sub 2}VO{sub 5.5} (x = 0) and Bi{sub 2}MoO{sub 6} (x = 1) are single-layer Aurivillius phases having ferroelectric properties and high ionic oxide conductivity. It is established that single-layer Aurivillius phases exist in the composition ranges 0 {<=} x {<=} 0.1 and 0.9 {<=} x {<=} 1. Additional phases with BiVO{sub 4} and Bi{sub 6}Mo{sub 2}O{sub 15} structures are found in the range 0.2 {<=} x {<=} 0.8. The presence of molybdenum stabilizes the orthorhombic {beta}-Bi{sub 2}VO{sub 5.5} phase at room temperature. The conductivity of solid solutions based on Bi{sub 2}VO{sub 5.5} differs only slightly from that of pure bismuth vanadate. Conductivity of solid solutions based on Bi{sub 2}MoO{sub 6} is half an order of magnitude higher than that of pure bismuth molybdate.

• OSTI ID: 21090939
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 2 Vol. 52; ISSN 1063-7745; ISSN CYSTE3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH COMPOUNDS
CERAMICS
ELECTRICAL PROPERTIES
FERROELECTRIC MATERIALS
LAYERS
MOLYBDATES
ORTHORHOMBIC LATTICES
OXIDES
SOLID SOLUTIONS
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
VANADATES