Polaron relaxation associated with the localized oxygen vacancies in Ba{sub 0.85}Sr{sub 0.15}TiO{sub 3} ceramics at high temperatures
Journal Article
·
· Journal of Applied Physics
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072 (China)
The temperature and frequency dependences of dielectric properties of barium strontium titanate [Ba{sub 0.85}Sr{sub 0.15}TiO{sub 3} (BST15)] ceramics have been investigated. The dielectric relaxation behavior above 180 deg. C was observed in BST15 ceramics with broad dielectric peaks. The contribution of dc conduction and universal dielectric response to the relaxation has been studied. In contrast to typical ion conductor such as La{sub 2}Mo{sub 2}O{sub 9}, the extent of dielectric dispersion shows the similar temperature dependence characteristic. Polaron theory indicates that the relaxation in BST15 ceramics at high temperatures is associated with the hopping localized oxygen vacancies.
- OSTI ID:
- 21361809
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 106; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Simple oxalate precursor route for the preparation of barium-strontium titanate: Ba{sub 1-x}Sr{sub x}TiO{sub 3} powders
High temperature dielectric relaxation anomaly of Y³⁺ and Mn²⁺ doped barium strontium titanate ceramics
The enhancing performance of (Ba{sub 0.85}Ca{sub 0.15}Ti{sub 0.90}Zr{sub 0.10})O{sub 3} ceramics by tuning anatase–rutile phase structure
Journal Article
·
Fri Jan 14 23:00:00 EST 2005
· Materials Characterization
·
OSTI ID:20748656
High temperature dielectric relaxation anomaly of Y³⁺ and Mn²⁺ doped barium strontium titanate ceramics
Journal Article
·
Tue Oct 14 00:00:00 EDT 2014
· Journal of Applied Physics
·
OSTI ID:22305796
The enhancing performance of (Ba{sub 0.85}Ca{sub 0.15}Ti{sub 0.90}Zr{sub 0.10})O{sub 3} ceramics by tuning anatase–rutile phase structure
Journal Article
·
Fri Apr 15 00:00:00 EDT 2016
· Materials Research Bulletin
·
OSTI ID:22581520
Related Subjects
36 MATERIALS SCIENCE
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BARIUM
BARIUM COMPOUNDS
CERAMICS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FERROELECTRIC MATERIALS
FREQUENCY DEPENDENCE
IONIC CONDUCTIVITY
MATERIALS
METALS
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PERMITTIVITY
PHYSICAL PROPERTIES
POINT DEFECTS
POLARONS
QUASI PARTICLES
RELAXATION
STRONTIUM
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VACANCIES
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BARIUM
BARIUM COMPOUNDS
CERAMICS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FERROELECTRIC MATERIALS
FREQUENCY DEPENDENCE
IONIC CONDUCTIVITY
MATERIALS
METALS
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PERMITTIVITY
PHYSICAL PROPERTIES
POINT DEFECTS
POLARONS
QUASI PARTICLES
RELAXATION
STRONTIUM
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VACANCIES