Specific features in the synthesis, crystal structure and electrical conductivity of BICUTIVOX

The formation of solid solutions Bi 4V 2 − x Cu x/2 Ti x/2 O 11 − x (0.025 ≤ x ≤ 0.5) known as BICUTIVOX, synthesized by three different methods (a conventional solid-state synthesis, solid-state synthesis enhanced by mechanical activation, and through liquid precursors), has been studied. Based on...

Full description

Saved in:
Bibliographic Details
Published in:Solid state ionics 2011-10, Vol.201 (1), p.27-34
Main Authors: Morozova, M.V., Buyanova, E.S., Emelyanova, Yu.V., Zhukovskiy, V.M., Petrova, S.A., Zakharov, R.G., Tarakina, N.V.
Format: Article
Language:English
Subjects:
BIMEVOX
Ceramics
Crystal structure
Electrical conductivity
Electrical resistivity
Impedance spectroscopy
Liquids
Oxygen-ion conductors
Polymorphic modifications
Resistivity
Solid solutions
Synthesis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The formation of solid solutions Bi 4V 2 − x Cu x/2 Ti x/2 O 11 − x (0.025 ≤ x ≤ 0.5) known as BICUTIVOX, synthesized by three different methods (a conventional solid-state synthesis, solid-state synthesis enhanced by mechanical activation, and through liquid precursors), has been studied. Based on crystal structure investigations carried out at different temperatures, ranges of stability and temperatures of phase transitions for different polymorphous modifications have been defined. The morphology and the local chemical composition of the ceramic samples obtained have been studied. Thermal expansion coefficients have been measured. The electrical conductivity of ceramic samples has been investigated in a wide range of temperatures and partial oxygen pressures. ► We studied solid solutions Bi 4V 2 − x Cu x/2Ti x/2O 11 − δ synthesized using tree methods. ► High electrical conductivity (10 − 2 Sm − 1 cm − 1 at 750 °C) is characteristic of BITICUVOX. ► Non-controlled micro-impurities appear during the synthesis. ► Crystal structure does not remain stable during long term annealing.
ISSN:0167-2738
1872-7689
DOI:10.1016/j.ssi.2011.07.010