Study of structural evolution and photoluminescent properties at room temperature of Ca(Zr,Ti)O3 powders
Creators
- 1. Laboratorio Interdisciplinar de Eletroquimica e Ceramica-LIEC, Departamento de Quimica, Universidade Federal de Sao Carlos, P.O. Box 676, 13565-905 Sao Carlos, SP (Brazil)
- 2. Laboratorio Interdisciplinar em Ceramica, Departamento de Fisico-Quimica, Instituto de Quimica, Universidade Estadual Paulista, P.O. Box 355, 14801-907 Araraquara, SP (Brazil)
- 3. Centro Federal de Educacao Tecnologica do Maranhao-CEFET, Departamento de Quimica, CEP 64009-700, Sao Luis, MA (Brazil)
- 4. Departamento de Fisica, Universidade Federal de Sao Carlos, P.O. Box 676, 13565-905 Sao Carlos, SP (Brazil)
Description
Calcium zirconate titanate, Ca(Zr0.05Ti0.95)O3 (CZT) powders has been synthesized by the polymeric precursor method. The structural evolution and analysis of the CZT powders were monitored by the X-ray diffraction (XRD), Fourier transform Raman spectroscopy (FT-Raman) and ultraviolet-visible absorption spectroscopy (UV-vis). The decomposition of precursor resin was accompanied by evolution of thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTA). UV-vis measurements suggested that the presence of intermediary energy levels in the band gap are favorable for the intense and broad photoluminescence (PL) in structurally disordered CZT powders at room temperature. TGA and DTA have been employed to correlate the ranges of temperature with the structural order-disorder degree in the CZT lattice that are responsible by PL emission
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2007.09.121Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2007.09.121;
- PII
- S0925-8388(07)01934-2;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 464
- Journal Issue
- 1-2
- Journal Page Range
- p. 340-346
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40014990
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; CALCIUM COMPOUNDS; CERAMICS; DECOMPOSITION; DIFFERENTIAL THERMAL ANALYSIS; ENERGY LEVELS; FOURIER TRANSFORMATION; PHOTOLUMINESCENCE; POWDERS; RAMAN SPECTROSCOPY; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; THERMAL GRAVIMETRIC ANALYSIS; TITANATES; ULTRAVIOLET RADIATION; X-RAY DIFFRACTION; ZIRCONATES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; ELECTROMAGNETIC RADIATION; EMISSION; GRAVIMETRIC ANALYSIS; INTEGRAL TRANSFORMATIONS; LASER SPECTROSCOPY; LUMINESCENCE; OXYGEN COMPOUNDS; PHOTON EMISSION; QUANTITATIVE CHEMICAL ANALYSIS; RADIATIONS; SCATTERING; SPECTROSCOPY; TEMPERATURE RANGE; THERMAL ANALYSIS; TITANIUM COMPOUNDS; TRANSFORMATIONS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.