Effect of Nd³⁺ on the Properties of Lithium Niobium Borate Crystal and Glass

Abstract:

1 mol% of neodymium-doped lithium niobium borate (NdLNB) glass and crystal have been produced by using melt-quenching and Czochralski technique, respectively. The synthesis, growth and characterizations of the samples were reported. X-ray diffraction (XRD), Differential thermal analyzer (DTA), Ultraviolet-Visible-Near-Infrared (UV-Vis-NIR) and Photoluminescence (PL) spectroscopic characterizations were made to examine the influence of Nd³⁺ on the physical, structural and optical properties of the samples. Various physical properties such as density, molar volume, ion concentration, polaron radius, inter-nuclear distance and field strength were calculated. The as-quenched glass was amorphous whereas crystal was crystalline as established via XRD studies. UV-Vis-NIR spectra exhibited eight prominent bands centered at 353, 475, 524, 583, 681, 745, 803, 875 nm corresponding to the transitions from the ground state to ⁴D_3/2, ²G_9/2, ⁴G_7/2, ⁴G_5/2, ⁴F_9/2, ⁴F_7/2, ⁴F_5/2, ⁴F_3/2 excited states, respectively. Moreover, the emission spectra at 355 nm excitation displayed several peaks that contributed to the transition of (⁴F_3/2→⁴I_9/2) and (⁴F_3/2→⁴I_11/2), respectively. Fluorescence lifetime was recorded at 53.69 µs for the glass whereas the crystal was recorded at 43.62 µs. It was found that Nd³⁺ ions affected the physical, structural and optical properties of the glass and crystal samples.

• Periodical: Solid State Phenomena (Volume 268)
• Pages: 210-216
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.268.210
• Online since: October 2017
• Authors: Wan Hairul Anuar Kamaruddin*, Md Supar Rohani, M.R. Sahar, Hong Liu
• Keywords: Borate Crystal, Borate Glass, Czochralski, Lithium Borate, Neodymium

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