Growth and characterization of aliovalent ion-doped LiCaAlF6 single crystals

被引：10
作者：
Sato, H
Machida, H
Nikl, M
Yoshikawa, A
Fukuda, T
机构：
[1] NEC TOKIN Corp, Tsukuba, Ibaraki 3050875, Japan
[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
[3] ASCR, Inst Phys, Prague 16253, Czech Republic
来源：
JOURNAL OF CRYSTAL GROWTH | 2003年 / 250卷 / 1-2期
关键词：
F-center; doping; induced absorption; Czochralski method; LiCaAlF6; optical materials;
D O I：
10.1016/S0022-0248(02)02231-5
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Two-inch size LiCaAlF6 (LiCAF) single-crystals doped with Mg2+ and Ba2+ were successfully grown by the Czochralski technique. Optical absorption measurements in the UV/VIS spectral regions following X-ray irradiation (radiation-induced absorption) were performed in order to investigate the radiation damage of the crystals. It is found that the amplitude of the F-absorption band is suppressed more than a factor of 3 by Mg doping, while in the case of Ba-doped LiCAF, no significant variation is observed. For Mg-doped crystals, the optimum doping concentration is about 0.2 mol% of Mg2+. The crystallinity was studied using X-ray rocking curve analysis. The precise measurement of the refractive index showed that refractive index of LiCAF dose not change by the Mg2+ doping, within the doping range of Mg2+ <1.0 mol%. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：83 / 89
页数：7
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