Investigation on the structural and photoluminescent properties of chromium-doped ceramics cordierite
| Autor: | S.S. Pedro, Lilian P. Sosman, M.A.F.M. da Silva, A. López |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Photoluminescence
Materials science Analytical chemistry chemistry.chemical_element Mineralogy Cordierite 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Inorganic Chemistry Crystal Chromium Transition metal Photoluminescence excitation Ceramic Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy Organic Chemistry Doping 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry visual_art engineering visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Optical Materials. 60:188-195 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2016.07.033 |
| Popis: | This work presents the investigation about the structural and optical properties of a doped-chromium system containing cordierite (Mg 2 Al 4 Si 5 O 18 ) as main phase. The sample composition and the structural data were obtained from X-ray diffraction (XRD) measurements and the results were analyzed by Rietveld method. Photoluminescence (PL) spectra under several excitation wavelengths and photoluminescence excitation (PLE) measurements were performed. The obtained results from PL and PLE experiments are evidences that Cr 3+ occupies octahedral sites in this ceramic system. By correlating the optical results, the crystal field parameter ( Dq ) and Racah interelectronic repulsion parameters ( B and C) were calculated and discussed according to the Tanabe-Sugano (TS) theory for d 3 transition metals in octahedral sites. |
| Databáze: | OpenAIRE |
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