Structure Analysis, Photoluminescence, and Non-linear/Linear Optical Parameters of Li-=SUB=-2-=/SUB=-Ge-=SUB=-4-=/SUB=-O-=SUB=-9-=/SUB=- : Mn-=SUP=-4+-=/SUP=- Transparent Glass-Ceramic
نویسندگان
چکیده
In this study, Li 2 Ge 4 O 9 : Mn 4+ transparent glass-ceramic was prepared by conventional melt-quenching. The thermal treatment used for the devitrification of sample. creation a nanocrystalline precipitated through glass matrix verified X-ray diffraction and HR-TEM. Electron paramagnetic resonance spectra were employed to confirm oxidation 2+ in after treatment. photoluminescence displayed narrow red band centered at 668 nm ascribed spin-forbidden E g -> A 2g transition . To estimate optical parameters, UV-Vis-IR absorption spectroscopies measured. shift direct gap opt , from 3.81 2.55 eV, observed increasing concentration. dispersion refraction indices (n, n бесконечность ), oscillator wavelength (λ 0 ) examined using Wemple--DiDomenico single-oscillator model. relationship between refractive index energy has been investigated various models such as Moss, Herve--Vandamme, Ravindra, Singh--Kumar. addition, linear non-linear properties mentioned. temperature-dependent luminescence intensity measurement also carried out. method preparation exposed herein synthesis -doped GCs might be prevailing produce identical luminescent ceramics accordance with glass's devitrification. Keywords: glass-ceramics, photoluminescence, properties, non-linear/linear optical,
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ژورنال
عنوان ژورنال: Fizika tverdogo tela
سال: 2022
ISSN: ['0367-3294', '1726-7498']
DOI: https://doi.org/10.21883/pss.2022.06.54372.002