Radiation defects in LiBaF3 perovskites

被引：0
|
作者：
Kulis, P [1 ]
Tale, I [1 ]
Springis, M [1 ]
Rogulis, U [1 ]
Trokss, J [1 ]
Veispals, A [1 ]
Fitting, HJ [1 ]
机构：
[1] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia
来源：
DEFECTS AND SURFACE-INDUCED EFFECTS IN ADVANCED PEROVSKITES | 2000年 / 77卷
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D O I：
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中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We investigated the electron paramagnetic resonance (EPR), recombination afterglow, thermostimulated luminescence (TSL) and absorption of LiBaF3 perovskites crystals X-irradiated at 80 K The self-trapped hole centre V-K(F-2(-)) oriented along the [110] axis and electron F type (F-A) centres are identified. X-irradiation at temperatures below 200 K results in creation of a long-term temperature-independent afterglow- tunnelling luminescence (TL), with main emission bands at 300, 370 nm and 430 nm. The short wavelength TL bands are associated with the tunnelling recombination of the F type centre with the V-K centre. The thermal stability of V-K centre is estimated to be about 130 K.
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页码：393 / 398
页数：6
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