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Effect of Li 2 O substitution on structures and properties of Nd 3+ ‐doped Al(PO 3 ) 3 ‐Li 2 O glasses
Author(s) -
Guo Mengting,
Yue Yu,
Yu Jingbo,
Shao Chongyun,
Ren Jinjun,
Wang Xin,
Hu Lili
Publication year - 2020
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.13933
Subject(s) - electron paramagnetic resonance , materials science , ion , analytical chemistry (journal) , doping , raman spectroscopy , lithium (medication) , phosphate glass , crystallography , nuclear magnetic resonance , chemistry , medicine , physics , optoelectronics , organic chemistry , chromatography , optics , endocrinology
99.8[(1−x%)Al(PO 3 ) 3 −x%Li 2 O]‐0.2Nd 2 O 3 glasses (mol%, x = 0, 5, 10, 15, 20) were prepared by high‐temperature melt and quenching method. The effect of Li 2 O replacing Al(PO 3 ) 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 Li 2 O. The Judd‐Ofelt (J‐O) parameters Ω 4,6 increase, but Ω 2 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(PO 3 ) 3 ‐Li 2 O phosphate glasses.