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A-site substitution-controlled dielectric dispersion in lead-free sodium bismuth titanate.
- Source :
-
Pramana: Journal of Physics . Jun2009, Vol. 72 Issue 6, p999-1009. 11p. 2 Charts, 5 Graphs. - Publication Year :
- 2009
-
Abstract
- Effect of doping in Na0.5Bi0.5TiO3 (NBT) with Ce3+ and Sm3+ at the A-site on dielectric behaviour, impedance and conductivity is being reported. Na0.5Bi0.5-xAxTiO3 samples (A being Ce and Sm) are studied with varying values of x. For Na0.5Bi0.5-xCexTiO3 samples x is 0.001, 0.005 and 0.007 and for Na0.5Bi0.5-xSmxTiO3 samples x is 0.05, 0.1 and 0.15. Dielectric constant and loss are studied in the frequency range 10 kHz to 1 MHz and in the temperature range 30-650°C. Impedance and electric modulus studies are undertaken. The relaxations observed in the samples are non-Debye and activation energies for relaxation and conduction are evaluated. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TITANATES
*TITANIUM
*ALUMINUM titanate
*BARIUM metatitanate
*DISODIUM hexatitanate
Subjects
Details
- Language :
- English
- ISSN :
- 03044289
- Volume :
- 72
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Pramana: Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 43692379
- Full Text :
- https://doi.org/10.1007/s12043-009-0092-x