外文题目: Aluminum effects on structure and spectroscopic properties of holmium-doped sol-gel silica glasses
作者: Wang, Xue; Xu, Wenbin; Wang, Shikai; Yu, Chunlei; Chen, Danping; Hu, Lili
刊名: J. Alloy. Compd.
年: 2016 卷: 657 页： 478--482
英文关键词:
Spectroscopy of Ho3+ ion; Sol-gel method; Al-27 NMR; Structure
ALUMINOSILICATE GLASSES; AL-27 NMR; FLUORESCENCE; ENHANCEMENT; AL2O3-SIO2; IONS; AL3+
英文摘要:
A series of Ho3+-doped silica glasses containing different Al2O3/Ho2O3 mole ratios were prepared successfully using a sol-gel method combined with high temperature sintering. The X-ray diffraction (XRD), nuclear magnetic resonance (NMR) spectra of Al-27, and X-ray photoelectron spectra (XPS) of O1s, as well as the absorption and fluorescence spectra of the Ho3+ ions in these silica glasses, were recorded and analyzed systematically. The Al-27-NMR spectral studies indicated that Al3+ ions entered the glass structure mainly in sixfold and fivefold co-ordination for the series of solegel HAS glasses with constant 0.2 mol% Ho2O3 content. The NMR and XPS results obtained indicated a relationship between the amounts of Al2O3 and Ho2O3 and the Al coordination. Based on the structure and spectroscopic properties of the Ho3+-doped silica glasses, it was concluded that the optimum Al2O3/Ho2O3 mole ratio for the Ho3+/Al3+ co-doped silica glass for a 2-mu m laser was 15. (C) 2015 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1016/j.jallcom.2015.10.144


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