Tarafder, Anal and Molla, Atiar Rahaman and Karmakar, Basudeb (2010) Effects of nano-YAG (Y(3)Al(5)O(12)) crystallization on the structure and photoluminescence properties of Nd(3+)-doped K(2)O-SiO(2)-Y(2)O(3)-Al(2)O(3) glasses. Solid State Sciences, 12 (10). pp. 1756-1763. ISSN 1293-2558

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Abstract

Nd(3+)-doped precursor glass in the K(2)O-SiO(2)-Y(2)O(3)-Al(2)O(3) (KSYA) system was prepared by the melt-quench technique. The transparent Y(3)Al(5)O(12) (VAG) glass ceramics were derived from this glass by a controlled crystallization process at 750 degrees C for 5-100 h. The formation of VAG crystal phase, size and morphology with progress of heat-treatment was examined by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and Fourier transformed infrared reflectance spectroscopy (FT-IRRS). The crystallite sizes obtained from XRD are found to increase with heat-treatment time and vary in the range 25-40 nm. The measured photoluminescence spectra have exhibited emission transitions of 4F(3/2) -> 4I(J) (J = 9/2, 11/2 and 13/2) from Nd(3+) ions upon excitation at 829 nm. It is observed that the photoluminescence intensity and excited state lifetime of Nd(3+) ions decrease with increase in heat-treatment time. The present study indicates that the incorporation of Nd(3+) ions into YAG crystal lattice enhance the fluorescence performance of the glass ceramic nanocomposites. (C) 2010 Elsevier Masson SAS. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Transparent glass-ceramic; Nano-crystallized Nd(3+):YAG; Photoluminescence; Lifetime
Subjects:	Glass
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Feb 2012 10:51
Last Modified:	26 Mar 2012 09:44
URI:	http://cgcri.csircentral.net/id/eprint/931

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