Growth and vibrational spectra of doped KMgF3 single crystal.
The different ions doped KMgF(3) single crystals are prepared by the vertical Bridgman method. The near-infrared absorption spectra for different parts of all as-growth crystals indicate that there is the best transparency in middle part. The correlation between the vibronic frequencies of Eu(2+) and the site displacement of Cu(+) co-doped ions is firstly studied, which indicates that Cu(+) ions replace the site of the Mg(2+) ions. The co-doped Eu(2+) counteracts the charge misfit causing by the replacement of Mg(2+) with Cu(+). The overlapping of the emission spectra of the Eu(2+) and the excitation spectra of the Cu(+) results in the energy transfer from Eu(2+) to Cu(+).
Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China. jia@mailer.uni-marburg.de
Zhihong
Z
Jia
Lihua
L
Yu
Chunshan
C
Shi
D003300:Copper; D003460:Crystallization; D007477:Ions / Q000737:chemistry*; D008274:Magnesium / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014961:X-Ray Diffraction
D007477:Ions; D003300:Copper; D008274:Magnesium