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Synthesis and characterization of lithium niobium borate glasses containing neodymium

Kamaruddin, Wan Hairul Anuar and Rohani, Md. Supar and Sahar, Md. Rahim and Liu, Hong and Sang, Yuanhua (2016) Synthesis and characterization of lithium niobium borate glasses containing neodymium. Journal Of Rare Earths, 34 (12). pp. 1199-1205. ISSN 1002-0721

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

A series of (90– x )Li 2 B 4 O 7 -10Nb 2 O 5 - x Nd 2 O 3 glass samples ( x =0, 5 mol.%, 10 mol.%, 15 mol.%, 20 mol.% and 25 mol.%) were synthesized using melt quenching tec hnique. X-ray diffraction (XRD), differential thermal analyzer (DTA), Fourier transformed infrared (FTIR), ultraviolet-visible-near-infrared (UV-Vis-NIR) spectrometer and photoluminescence (PL) spectroscopic character i- zations were made to examine the influence of Nd 3+ concentration on the physical, structural and optical properties. Various physical properties such as glasses densit y, molar volume, thermal stability, ion concentration, polar on radius, inter-nuclear distance , field strength, cut-off wavelength, energy band gap and Urbach energy were calculated. Th e samples were amorphous in nature and con- firmed from XRD pattern. The FTIR spectra revealed the presence of BO 3 and BO 4 functional groups. UV-Vi s-NIR spectra exhibited nine prominent bands centered at 353, 430, 475, 524, 583, 681, 745, 803, 875 nm corresponding to the transitions from the groun d state to 4 D 3/2 , 2 P 1/2 , 2 G 9/2 , 4 G 7/2 , 4 G 5/2 , 4 F 9/2 , 4 F 7/2 , 4 F 5/2 , 4 F 3/2 excited states, respectively. Moreov er, the emission spectra at 355 nm ex- citation displayed three peaks centered at 903 nm ( 4 F 3/2 → 4 I 9/2 ), 1059 nm ( 4 F 3/2 → 4 I 11/2 ) and 1333 nm ( 4 F 3/2 → 4 I 13/2 ), respectively. Fluo- rescence lifetime was recorded between 53.69 to 28.43 μs. It was found that varying concentration of Nd 3+ ions strongly affected the physical, structural and optical properties of the glass samples.

Item Type:Article
Additional Information:RADIS System Ref No:PB/2016/06195
Subjects:A General Works
Q Science
Divisions:Science
Office of Deputy Vice Chancellor (Research & Innovation)
ID Code:68389
Deposited By: Haliza Zainal
Deposited On:01 Nov 2017 11:36
Last Modified:20 Nov 2017 16:52

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