Article ID Journal Published Year Pages File Type
1493206 Optical Materials 2016 8 Pages PDF
Abstract
This work presents the investigation about the structural and optical properties of a doped-chromium system containing cordierite (Mg2Al4Si5O18) 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 Cr3+ 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 d3 transition metals in octahedral sites.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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