Electrical conductivity spectra of Sn doped BaTi{sub 0.95}Zr{sub 0.05}O{sub 3}
The alternating current (ac) conductivity spectra of Sn doped BaTi{sub 0.95}Zr{sub 0.05}O{sub 3} prepared by solid state reaction have been studied in the temperature range of 373–473 K. Mixed valency of Sn atoms and the oxygen vacancy controls electrical transport process. The ac conductivity follows Jonscher type power law as a function of frequency. Derived dc conductivity and hopping frequency follow Arrhenius type temperature dependency and have same activation energy. Almost temperature independent nature of frequency exponent indicates that the electrical conduction in Zr and Sn co-doped BaTiO{sub 3} relaxor is quantum mechanical electron tunneling. The conductivity spectra are perfectly scaled using the scaling parameters as dc conductivity and hopping frequency.
- OSTI ID:
- 22304307
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 20 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Temperature dependent dielectric and conductivity studies of polyvinyl alcohol-ZnO nanocomposite films by impedance spectroscopy
Field enhanced bulk conductivity of acceptor-doped BaTi{sub 1-x}Ca{sub x}O{sub 3-x} ceramics
Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTIVATION ENERGY
ALTERNATING CURRENT
BARIUM COMPOUNDS
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
FREQUENCY DEPENDENCE
OXYGEN
QUANTUM MECHANICS
SCALING
SOLIDS
SPECTRA
TEMPERATURE RANGE 0400-1000 K
TIN ADDITIONS
TITANATES
TUNNEL EFFECT
VACANCIES
ZIRCONIUM ADDITIONS