Open AccessStudy of growth, spectra properties and Cr4+ formation mechanism of Cr,Mg:GSGG crystal
Author(s) -
Jiang Da-peng,
Su Liang-Bi,
Jun Xu,
Tang Hui-Li,
Feng Wu,
Lihe Zheng,
QingGuo Wang,
Guo Xin,
Zou Yu-Qi
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.038102
Subject(s) - materials science , absorption spectroscopy , ion , annealing (glass) , oxidizing agent , spectral line , czochralski method , crystal (programming language) , absorption (acoustics) , doping , analytical chemistry (journal) , crystallography , optics , chemistry , physics , optoelectronics , astronomy , computer science , programming language , organic chemistry , chromatography , composite material
Cr,Mg:GSGG crystals are successfully grown by the Czochralski method. The influences of reducing- and oxidizing- annealing treatments on the absorption spectra of Cr,Mg:GSGG crystals are investigated. From the changes of their absorption spectra, it can be inferred that the Cr4+ ions are initially generated at octahedrally coordinated sites, and then exchange positions with tetrahedral Ga3+ ions in neighboring sites under heat exciting. Differences between absorption spectra also suggest that Mg2+ ions can improve the concentration of tetrahedral Cr4+ ions.