Electron paramagnetic resonance spectroscopy of Cr3+ in hexagonal Cs2NaGaF6 crystals

被引：0
|
作者：
Vrielinck, H
Khaidukov, NM
Callens, F
Matthys, P
机构：
[1] Univ Ghent, Dept Solid State Sci, B-9000 Ghent, Belgium
[2] Russian Acad Sci, Inst Gen & Inorgan Chem, Moscow 117907, Russia
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2002年 / 157卷 / 6-12期
关键词：
laser materials; fluoride crystals; transition metal ion; EPR;
D O I：
10.1080/10420150215764
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Powder samples of hydrothermally grown Cr3+ -doped Cs-2 NaGaF6 crystals have been investigated with electron paramagnetic resonance spectroscopy at X - (9.5 GHz) and Q -band (34 GHz). Analysis of the spectra clearly demonstrates that there are two distinct Cr3+ centres in the Cs2NaGaF6 crystal, having nearly identical g factors, but differing largely from the viewpoint of their zero field splitting. By using the Cr-53 hyperfine spectra observed with electron nuclear double resonance spectroscopy, it is deduced that these centres have opposite signs for the zero field splitting. The spectroscopic properties of the Cr3+ centres in the isostructural Cs2NaGaF6 and Cs2NaAlF6 crystals are compared and discussed.
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页码：1155 / 1159
页数：5
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