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A-site substitution-controlled dielectric dispersion in lead-free sodium bismuth titanate.
- Source :
-
Journal of Chemical Sciences . May2009, Vol. 121 Issue 3, p999-1009. 11p. 1 Diagram, 2 Charts, 4 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]
Details
- Language :
- English
- ISSN :
- 09743626
- Volume :
- 121
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 43582145