BO2 -F+ Centers in the Radiation-damaged YCOB Crystals
RUAN Yong-Feng1 , Hiroshi NAKAO2 , Takatomo SASAKI2
1 Department of Physics, Tianjin University, Tianjin 300072
2 Department of Electrical Engineering, Osaka University, Osaka 565-0871, Japan
BO2 -F+ Centers in the Radiation-damaged YCOB Crystals
RUAN Yong-Feng1 ;Hiroshi NAKAO2 ;Takatomo SASAKI2
1 Department of Physics, Tianjin University, Tianjin 300072
2 Department of Electrical Engineering, Osaka University, Osaka 565-0871, Japan
关键词 :
61.80.Az ,
61.72.Hh ,
42.70.Mp
Abstract : An intense paramagnetic EPR signal generated from x-ray-irradiated, powdered YCOB crystals was observed at the liquid nitrogen temperature for the first time. Five peaks, located at the positions where the effective g factor equals to 1.992, 1.986, 1.980, 1.974 and 1.965, labeled as A, B, C, D and E respectively, were observed. It is believed that the peaks A, B, C and D generated from the BO2 -F+ center which is a single electron trapped in an oxygen vacancy which was originally occupied by an O2- ion bonded to a (BO3 )3- anion group. The peak E is thought of coming from Y2+ ions that are formed by the Y3+ ions trapping electrons. The mechanism for the formation of the radiation-induced defects in the YCOB crystals is suggested.
Key words :
61.80.Az
61.72.Hh
42.70.Mp
出版日期: 2000-12-01
:
61.80.Az
(Theory and models of radiation effects)
61.72.Hh
(Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.))
42.70.Mp
(Nonlinear optical crystals)
引用本文:
RUAN Yong-Feng;Hiroshi NAKAO;Takatomo SASAKI. BO2 -F+ Centers in the Radiation-damaged YCOB Crystals[J]. 中国物理快报, 2000, 17(12): 896-898.
RUAN Yong-Feng, Hiroshi NAKAO, Takatomo SASAKI. BO2 -F+ Centers in the Radiation-damaged YCOB Crystals. Chin. Phys. Lett., 2000, 17(12): 896-898.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2000/V17/I12/896
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