Photoluminescence and Structural Characterization of RE-Doped Sodium Aluminosilicate Oxyfluoride Glass and Nanocrystalline Glass-Ceramics as a Function of γ-Irradiation Dose

被引：4
作者：
Mahendru, Nancy [1 ,2 ]
Kothiyal, Govind P. [3 ]
Singla, Shivani [2 ]
Falconier, Mauro [4 ]
Sharma, Gopi [2 ]
机构：
[1] Sikh Natl Coll, Banga 144505, India
[2] Kanya Maha Vidyalaya, Dept Phys, Jalandhar 144004, Punjab, India
[3] Bhabha Atom Res Ctr, Mat Grp, Glass & Adv Ceram Div, Mumbai 400085, Maharashtra, India
[4] ENEA, CR Casaccia, Via Anguillarese 301, I-00123 Rome, Italy
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2019年 / 256卷 / 10期
关键词：
gamma-irradiation; nanocrystalline glass ceramics; oxyfluoride glass; rare-earth doping; OPTICAL-PROPERTIES; EARTH; CRYSTALLIZATION; IONS;
D O I：
10.1002/pssb.201900029
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Dy3+ and Eu3+-doped oxyfluoride glass and glass nanocomposites are subjected to low and high dose of gamma-irradiation, i.e., 100Gy and 1kGy, respectively. The photoluminescence spectra show changes in electric to magnetic dipole ratios signifying variations in local structural environment. Glass-ceramics depict the tendency of crystallization or the ordering of structure with increasing gamma-irradiation dose. The results are further supported with X-ray diffraction and scanning electron microscopy (SEM) measurements. The formation of nanometer size fluoride particles in the pristine glass and glass-ceramics after gamma-irradiation has been observed from SEM studies. Fourier transform infrared (FTIR) study reveals the restructuring of aluminosilicate network under gamma-irradiation.
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页数：11
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