Effect of Li2O substitution on structures and properties of Nd3+‐doped Al(PO3)3‐Li2O glasses. (30th September 2019)

• Record Type: Journal Article
• Authors: Guo, Mengting; Yue, Yu; Yu, Jingbo; Shao, Chongyun; Ren, Jinjun; Wang, Xin; Hu, Lili
• Is Part Of: International journal of applied glass science. Volume 11:Number 1(2020)
• Page Start: 66
• Page End: 77
• Publication Date: 2019-09-30
• Subjects: neodymium phosphate glass -- network structure -- rare‐earth local structure; Glass -- Periodicals; Glass manufacture -- Periodicals; 666.1
• DOI: 10.1111/ijag.13933
• Languages: English
• ISSNs: 2041-1286

Abstract

Abstract: 99.8[(1−x%)Al(PO3 )3 −x%Li2 O]‐0.2Nd2 O3 glasses (mol%, x = 0, 5, 10, 15, 20) were prepared by high‐temperature melt and quenching method. The effect of Li2 O replacing Al(PO3 )3 on the physical, mechanical, and optical properties was correlated with the network structures and the local environment around Nd 3+ ions, which were obtained via Raman scattering spectra, solid‐state nuclear magnetic resonance (SSNMR), and pulse electron paramagnetic resonance (EPR) techniques. SSNMR results indicate that the addition of Li + ions cannot affect the connectivity between P and Al while it can break the P‐O‐P linkages resulting in the depolymerization of glass networks. EPR spectra indicate an increasing engagement of lithium around Nd 3+ ions with the increase of Li2 O. The Judd‐Ofelt (J‐O) parameters Ω4, 6 increase, but Ω2 decreases. The emission cross section at 1053 nm and quantum efficiency are improved by 27% and 31%, respectively. The work is helpful for understanding the evolution mechanism of emission properties and structures in Nd 3+ ‐doped Al(PO3 )3 ‐Li2 O phosphate glasses.