Affiliation: | aFujian Institute of Research on the Structure of Matter, State Key Laboratory of Structural Chemistry, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China bGraduated School of Chinese Academy of Sciences, Beijing 100039, PR China |
Abstract: | Novel pure and cobalt-doped magnesium borate crystals (Mg3B2O6) have been grown successfully by the Czochralski technique for the first time. Crystal growth, X-ray powder diffraction (XRD) analysis, absorption spectrum, fluorescence spectrum as well as fluorescence decay curve of Co2+:Mg3B2O6 (MBO) were described. From the absorption peaks for the octahedral Co2+ ions, the crystal-field parameter Dq and the Racah parameter B were estimated to be 943.3 cm−1 and 821.6 cm−1, respectively. The fluorescence lifetime of the transition 4T1(4P) → 4T2 centered at 717 nm was measured to be 9.68 ms. |