Spectral introduction of Ni _ 21Ca _ 3C2E3 _ O12 (CASGG) single crystal. The absorption spectrum analysis shows that it is mainly used as a substitute dopant for octahedral position Sc3 1 and tetrahedral position Ge4 1.

The coordination field theory and telephone number query in light distribution transition, the coordination framework of B and C parameters, for geometric acquisition. Three emission transitions observed in the green, red and infrared regions,

Give 1T2 (one-dimensional)! 3a2 (third floor), 1T2 (1D)! 3t2 (third floor) and 3t2 (third floor)! 3 a2(3 layers) transitions Ni2 1 are in octahedral positions respectively. The luminescence of Ni2 1 at tetrahedral position was observed. Q 1999 Elsevier Technology Co., Ltd. All rights reserved.

Keywords: 1. A. oxides and inorganic compounds of optical materials; 4. Glowing; 4. Optical characteristics