Photoluminescence of Co2+ ions in Mg2SnO4 tetrahedral sites
Source abstract
Abstract
Abstract This paper presents photoluminescence data from Mg2SnO4:Co2+ (0.1%) at room temperature. The sample was prepared by solid state method at high temperature under atmospheric pressure, and the compound formation was investigated using X-ray diffraction. X-ray data were refined using the Rietveld method, and crystallographic parameters were determined. Photoluminescence spectra showed intense and broad emission bands in red and infrared spectral regions, characteristic of spin-allowed transitions of Co2+ in tetrahedral sites. Lifetime measurements showed that radiative processes are predominant in ion relaxation to 0.1% of Co2+at room temperature. The crystalline field Dq and Racah interelectronic parameters B and C were obtained from the optical spectra, using the Crystal Field Theory.
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Research context
OpenAlex topics: Nuclear materials and radiation effects · Luminescence Properties of Advanced Materials · Electronic and Structural Properties of Oxides
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