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- Publisher
- Springer Journals
- Copyright
- Copyright © 2008 by Springer-Verlag
- Subject
- Chemistry; Condensed Matter Physics; Optical and Electronic Materials; Renewable and Green Energy; Electrochemistry
- ISSN
- 0947-7047
- eISSN
- 1862-0760
- DOI
- 10.1007/s11581-008-0298-9
- Publisher site
- See Article on Publisher Site
Abstract
Bi4V2O11 exists in three phases viz. α, β, and γ. High temperature γ-phase can be stabilized to room temperature owing to its higher conductivity by the partial substitution of metallic cations for vanadium in Bi4V2O11. Phase transitions from α → β and β → γ are composition and temperature-dependent. Mn2+-doped compounds Bi4V2−x Mn x O11− δ (0 ≤ x ≤ 0.4) have been synthesized by solid state reaction technique and investigated by X-ray diffraction and ionic conductivity measurement. High ionic conducting γ-phase is stabilized for x ≥ 0.2. The ionic conductivity of the series of Bi4V2−x Mn x O11− δ samples has been measured by using ac impedance spectroscopy technique. The conductivity data do show departure from its simple Arrhenius behavior for all of the compositions. The highest conductivity observed for x = 0.2 sample can be attributed to lower activation energy.
Journal
Ionics – Springer Journals
Published: Dec 9, 2008