Published April 1, 2007
| Version v1
Journal article
Conducting grain boundaries in the high-dielectric-constant ceramic CaCu3Ti4O12
- 1. Department of Physics, Nanjing University, Nanjing 210093 (China)
- 2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)
Description
To clarify the electrical property of grain boundaries, the fine-grained ceramics CaCu3Ti4O12 have been treated with the hydrofluoric acid to remove the parts of grain boundaries. The dielectric response difference between the etched samples and the pristine ones indicates that the ceramic CaCu3Ti4O12 consists of insulating or semiconducting grains with conducting grain boundaries. Therefore, the giant dielectric phenomenon is supposed not to derive from the grain boundary barrier layer capacitance effect. The possible mechanism is discussed
Additional details
Identifiers
- DOI
- 10.1063/1.2713943;
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 101
- Journal Issue
- 7
- Journal Page Range
- p. 074101-074101.4
- ISSN
- 0021-8979
- CODEN
- JAPIAU
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39011555
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CALCIUM COMPOUNDS; CAPACITANCE; CERAMICS; COPPER COMPOUNDS; DIELECTRIC MATERIALS; ETCHING; GRAIN BOUNDARIES; HYDROFLUORIC ACID; PERMITTIVITY; TITANATES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; FLUORINE COMPOUNDS; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MATERIALS; MICROSTRUCTURE; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SURFACE FINISHING; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2007 American Institute of Physics