Growth, optical and EPR studies of 151Eu2+:YAG single crystals

被引：6
作者：
Petrosyan, A. G. [1 ]
Asatryan, H. R. [2 ]
Hovhannesyan, K. L. [1 ]
Derdzyan, M. V. [1 ]
Feofilov, S. P. [2 ]
Eganyan, A. V. [1 ]
Sargsyan, R. S. [1 ]
机构：
[1] Natl Acad Sci, Inst Phys Res, Ashtarak 0203, Armenia
[2] Ioffe Phys Tech Inst, Politekhnicheskaya Ul 26, St Petersburg 194021, Russia
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2017年 / 185卷
关键词：
Inorganic compounds; Crystal growth; Annealing; Optical properties; Electron paramagnetic resonance; ALUMINUM-GARNET CRYSTALS; COLOR-CENTERS; GEL METHOD; Y3AL5O12; CERAMICS;
D O I：
10.1016/j.matchemphys.2016.10.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single crystals of Eu-151:YAG were grown by the vertical Bridgman method using Eu2O3 with isotopic enrichment of 151Eu of 97.5%. Additional Hf(4+)or Si4+ ions were introduced to favor a high concentrations of Eu2+. As compared to Eu:YAG with natural isotope composition, the EPR spectra of YAG doped with 151Eu isotope show a reduced number of hyperfine structure components and a well-resolved structure of a bigger number of electronic transitions. Optical properties of obtained crystals and the effects of heat treatments under oxidizing and reducing conditions are reported. Based on the analysis of Eu3+ distribution in oxidized Eu,Hf:YAG, in comparison to that in Eu:YAG, the concentration of Eu2+ in as-grown Eu,Hf:YAG is determined. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：39 / 43
页数：5
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