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| Title: | Effect of Porosity on Electrical Properties of Undoped and Lanthanum Doped BaTi0.6Zr0.4O3 |
| Authors: | Dash, M S
Bera, J
Ghosh, S |
| Issue Date: | 2007 |
| Publisher: | IEEE |
| Citation: | International Conference on Solid Dielectrics, Winchester, UK, July 8-13, 2007 |
| Abstract: | In porous media, the porosity introduces
inhomogeneity in the bulk, which alters the mechanisms
of leakage and breakdown exhibited by the dense
analog. The presence of pores in solid dielectrics
significantly degrades the electrical characteristics and
breakdown strength of the material. Lanthanum doped
BaTi0.6Zr0.4O3 composition in Ba1-xLaxTi0.6[1-
5x/12]Zr0.4O3 were prepared by modified chemical
route. (COOH)2.2H2O, Ba(NO3)2, ZrOCl2.8H2O and
La2O3 are used to precipitate barium oxalate hydrate,
lanthanum oxalate hydrate and zirconium oxyhydroxide
from its water solution onto the surface of
suspended TiO2 particles. The lanthanum doped
BaTi0.6Zr0.4O3 composition was found to be cubic by
XRD analysis. A gradual shift of 2 angles to the
higher angle with increasing lanthanum percentage in
the BTZ reveals the contraction of perovskite lattice.
The frequency dependence of dielectric permittivity and
loss tan of the ceramics has been investigated. It is
found that die... |
| Description: | Copyright for this article belongs to IEEE |
| URI: | http://hdl.handle.net/2080/453 |
| Appears in Collections: | Conference Papers
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| IEEE ICSD UK 2007.pdf | | 369Kb | Adobe PDF | View/Open |
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