Spectrally resolved microprobe cathodoluminescence of intergrowth Bi5-xLaxTiNbWO15 ferroelectrics
Creators
- 1. Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan and Research Institute for Nanoscience (RIN) Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto (Japan)
- 2. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)
- 3. Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto (Japan) and Research Institute for Nanoscience (RIN) Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto (Japan)
Description
Spectrally resolved cathodoluminescence measurements of Bi5-xLaxTiNbWO15 (x=0-1.50) ceramics at room temperature showed three distinct luminescence bands located at about 380, 502, and 660 nm, respectively, which were tentatively assigned to F+ center, oxygen vacancy-related defect and octahedron structure-related luminescence center, respectively. These assignments could be made in light of electron irradiation experiments with different exposure times. Bands related to oxygen vacancies were clearly enhanced by lanthanum doping, indicating that charge compensation occurred by the substitution of Bi for La3+ in perovskitelike structured intergrowth ferroelectrics. We observed that, for contents of La3+ x>0.75, La3+ ions entered the [Bi2O2]2+ layer according to a doping mechanism which is briefly discussed in this letter
Additional details
Identifiers
- DOI
- 10.1063/1.2767857;
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 102
- Journal Issue
- 7
- Journal Page Range
- p. 076106-076106.3
- ISSN
- 0021-8979
- CODEN
- JAPIAU
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39076968
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH TUNGSTATES; CATHODOLUMINESCENCE; CERAMICS; CRYSTAL GROWTH; ELECTRONS; F CENTERS; FERROELECTRIC MATERIALS; LANTHANUM; LANTHANUM IONS; LANTHANUM TUNGSTATES; NIOBIUM COMPOUNDS; OXYGEN; TEMPERATURE RANGE 0273-0400 K; TITANIUM TUNGSTATES
- Descriptors DEC
- BISMUTH COMPOUNDS; CHARGED PARTICLES; COLOR CENTERS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIELECTRIC MATERIALS; ELEMENTARY PARTICLES; ELEMENTS; EMISSION; FERMIONS; IONS; LANTHANUM COMPOUNDS; LEPTONS; LUMINESCENCE; MATERIALS; METALS; NONMETALS; OXYGEN COMPOUNDS; PHOTON EMISSION; POINT DEFECTS; RARE EARTH COMPOUNDS; RARE EARTHS; REFRACTORY METAL COMPOUNDS; TEMPERATURE RANGE; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TUNGSTATES; TUNGSTEN COMPOUNDS; VACANCIES
Optional Information
- Notes
- (c) 2007 American Institute of Physics