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has been cited by the following article:

• TITLE: Temperature Dependent Luminescence Spectra of Synthetic and Natural Alexandrite (BeAl2O4:Cr3+)

  AUTHORS: Neilo Marcos Trindade, Américo Tabata, Rosa Maria Fernandes Scalvi, Luis Vicente de Andrade Scalvi

  KEYWORDS: Alexandrite, Luminescence, Cr3+ Transitions, Optical Absorption

  JOURNAL NAME: Materials Sciences and Applications, Vol.2 No.4, March 22, 2011

  ABSTRACT: Results of photoluminescence measurements for natural and synthetic alexandrite (BeAl2O4:Cr3+) are presented, where the samples are excited by the 488 nm line of an Ar+ laser, at different temperatures. The main issue is the analysis of the Cr3+ transition in the chrysoberyl matrix (BeAl2O4), with major technological application as active media for laser action. Results indicate anomalous behavior of Cr33+ transition depending on the measurement temperature. A simple model to explain the phenomena is suggested.