Effects of nano-YAG (Y3Al5O12) crystallization on the structure and photoluminescence properties of Nd3+-doped K2O–SiO2–Y2O3–Al2O3 glasses
作者： Anal Tarafder , Atiar Rahaman Molla , Basudeb Karmakar
DOI: 10.1016/J.SOLIDSTATESCIENCES.2010.07.027
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摘要: Abstract Nd3+-doped precursor glass in the K2O–SiO2–Y2O3–Al2O3 (KSYA) system was prepared by melt-quench technique. The transparent Y3Al5O12 (YAG) glass–ceramics were derived from this a controlled crystallization process at 750 °C for 5–100 h. formation of YAG crystal phase, size and morphology with progress heat-treatment examined X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission (TEM) Fourier transformed infrared reflectance spectroscopy (FT-IRRS). crystallite sizes obtained XRD are found to increase time vary range 25–40 nm. measured photoluminescence spectra have exhibited transitions 4F3/2 → 4IJ (J = 9/2, 11/2 13/2) Nd3+ ions upon excitation 829 nm. It is observed that intensity excited state lifetime decrease time. present study indicates incorporation into lattice enhance fluorescence performance glass–ceramic nanocomposites.
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