Effect of thermal annealing on structures and properties of Yb3+/Al3+/P5+ co-doped silica glasses

被引：8

作者：

Guo, Mengting ^{[1
,2
]}

Shao, Chongyun ^{[1
,2
]}

Shi, Feng ^{[1
,3
]}

Wang, Fan ^{[1
,2
]}

Wang, Shikai ^{[1
,2
]}

Yu, Chunlei ^{[1
,2
]}

Zhang, Lei ^{[1
,2
]}

Ren, Jinjun ^{[1
,2
]}

Hu, Lili ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Shanghai Univ, Dept Mat Sci & Engn, Shanghai 200444, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2019年 / 522卷

关键词：

Thermal annealing; Network structure; Rare earth local structure; Physical properties; Spectral properties; REFRACTIVE-INDEX; RELAXATION; SPECTROSCOPY; ALUMINUM; RAMAN; TEMPERATURE; PHOSPHORUS; FLUORINE; CENTERS; DENSITY;

D O I：

10.1016/j.jnoncrysol.2019.119563

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Homogeneous 89.9SiO(2)-4Al(2)O(3)-6P(2)O(5)-0.1Yb(2)O(3)/Eu2O3 glasses were fabricated via a sol -gel method and sintered under vacuum at high temperature, and subsequently they were annealed at 850 degrees C for 15 and 75 h. Effect of thermal annealing time on structures and properties of glasses was systematically investigated. Solid state nuclear magnetic resonance (SSNMR) and Raman scattering spectra were employed to characterize the network structures. Pulse electron paramagnetic resonance (EPR) techniques and the emission and excitation spectra of Eu3+ ions were used to study the local environment of Yb3+ ions. SSNMR and Raman results indicate that AlPO4 units increase at the expense of Al-V, Al-VI and P-(3) groups after annealing. The glass network structures have a significant influence on density and refractive index. EPR and Eu3+ spectra indicate an increase in Al around Yb3+ ions and a reduction in the asymmetry degree of Yb3+ ligands. A correlation between structures and properties of glasses is developed.

引用

页数：6

共 45 条

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