Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1530522 | Materials Science and Engineering: B | 2009 | 6 Pages |
Abstract
High conducting γ-phase can be stabilized at room temperature by substitution of various metal cations in bismuth vanadate known as Bi4V2âxMexO11âδ (Me = metal cation). In the present work, Ti2O3-doped Bi4V2âxTixO11âδ (0 â¤Â x â¤Â 0.4) samples were prepared by ceramic processing route and sintered over a range of temperature (750-825 °C) in the interval of 25 °C to study the influence of grain size and porosity on the ionic conductivity. A relation between microstructure, crystal structure and conductivity has been established using scanning electron microscopy, X-ray powder diffraction (XRD), a.c. impedance spectroscopy and differential scanning calorimetry (DSC). The study indicates that apart from phase stabilization, microstructure plays an important role to achieve high ionic conductivity.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Ravi Kant, K. Singh, O.P. Pandey,