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International Journal of Innovative Research and Development, Vol 1, No 7Sp (2012), Pagination: 181-185
Abstract
The series of compounds Bi4-xLixV2O11-δ-(0≤x≤0.4) has been prepared using solid state reaction technique. The crystal structure and conductivity were studied by using XRD and ac impedance spectroscopy. All the compounds exhibit α-typephase structure at room temperature. The β-phase appears to be suppressed for doped compounds. The conductivity of all the substituted phases is found to be higher than the parent compound. The highest conductivity (1.02×10-3 S/cm at 420°C) as compared to the parent compound was observed for x=0.3 substitution. The higher ionic conductivity for the doped compounds has been correlated with excess oxygen vacancies created by aliovalent substitution.
Keywords
XRD, Ionic Conductors, Sintering, DC Conductivity
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