Optical and structural properties of calcium silicate glasses

Meneses, D. De Sousa; Malki, M.; Echegut, Patrick

doi:10.1016/j.jnoncrysol.2006.08.022

Cited by 39 publications

(28 citation statements)

References 30 publications

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“…This method allows, without varying the temperature of the bath, to have a rather good value of this coefficient. The curve variations can be attributed to the concentration and also variations of ion diffusion coefficient, ion conductivity with the Ag + /Na + ratio and mixed alkali effect [3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Sem Results In Eds Configurationmentioning

confidence: 99%

“…The reflectivity spectra were fitted with a dielectric function model " ¼ " 0 þ i" 00 based on causal Gaussian absorption profiles that are well adapted for the analysis of amorphous materials and more particularly glasses [9,10]. The fitting of the spectra was made with FOCUS, a curve fitting software especially adapted for the analysis of optical spectra [11].…”

Section: Infrared Measurementsmentioning

confidence: 99%

“…In disordered materials like glasses the absorption components can be well approximated by causal Gaussian terms g cj [10]. So, the dielectric function model used in the fits is given by:…”

Section: Infrared Measurementsmentioning

confidence: 99%

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Structural Changes of Ag+–Na+ Annealed Ion-Exchanged Silicate Glasses Scanning Electron Microscopy, Far-Infrared Reflectivity, UV-Visible Absorption, and TEM Investigation

et al. 2010

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The effect of silver ionic exchange on the glass structure in a molten bath at 350°C was presented in a previous paper Catan et al. [1] (J NonCryst Solids 354:1026-1031, 2008. In this paper, the experiment is driven for a temperature near 310°C, the eutectic of a 10% AgNO 3 -NaNO 3 molten salt. The various exchanged silicate glasses are further annealed to obtain silver particles in the matrix. Infrared spectroscopy combined with UV/Visible spectroscopy and scanning electron microscopy analysis allowed to correlate the silver-ion penetration and particle formation with the degree of polymerisation of the silicate network. The previous results have demonstrated an insertion of silver ions in the glass structure that is about 10% higher than the departure of sodium ions. Infrared results obtained after ion exchange have proved that local alterations lead to a higher degree of depolymerisation of the silicate network. Here, the annealing of the samples promotes the formation of silver nanoparticles, the infrared measurements prove that the aggregation is correlated to a repolymerisation of the silicate network. Transmission electron microscopy (TEM) is used to evaluate the distribution size of the silver particles after annealing and to correlate it to the evolution of the absorption curves. The TEM observations prove that the particle are below the incident wavelength but shape factor could lead to scattering contribution when particle growths and to absorption spectra evolution.

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Section: Sem Results In Eds Configurationmentioning

confidence: 99%

Section: Infrared Measurementsmentioning

confidence: 99%

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Structural Changes of Ag+–Na+ Annealed Ion-Exchanged Silicate Glasses Scanning Electron Microscopy, Far-Infrared Reflectivity, UV-Visible Absorption, and TEM Investigation

et al. 2010

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“…The structural change evaluation has been carried out for these glasses using FTIR reflectance spectroscopy as a tool. [20], which may be overlapped with two more weak bands originated from intertetrahedral [Si-O-Si] vibrations around 600-800 cm À1 [21]. The reflectance band at 462 cm À1 can be attributed to the bending modes of the Si-O bonds of SiO 4 tetrahedra [20].…”

Section: Structural Analysismentioning

confidence: 97%

Concentration-dependent luminescence of Tb3+ ions in high calcium aluminosilicate glasses

Sontakke

Biswas

Annapurna

2009

Journal of Luminescence

133

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“…The measurements were made with an instrumental resolution of 4 cm À1 and with an aluminium mirror as a reference. In order to extract structural information, all the reflectivity spectra were fitted with a dielectric function model based on causal Gaussian absorption profiles that are well adapted for the analysis of amorphous materials and more particularly glasses [10,11]. Its implementation was made with FOCUS, curve fitting software developed especially for the analysis of optical spectra [12].…”

Section: Infrared Measurementsmentioning

confidence: 99%

Structural changes of Ag+–Na+ ion exchanged soda-lime glasses investigated by scanning electron microscopy and infrared reflectivity

Catan¹,

Meneses

Blondeau³

et al. 2008

Journal of Non-Crystalline Solids

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Optical and structural properties of calcium silicate glasses

Cited by 39 publications

References 30 publications

Structural Changes of Ag+–Na+ Annealed Ion-Exchanged Silicate Glasses Scanning Electron Microscopy, Far-Infrared Reflectivity, UV-Visible Absorption, and TEM Investigation

Structural Changes of Ag+–Na+ Annealed Ion-Exchanged Silicate Glasses Scanning Electron Microscopy, Far-Infrared Reflectivity, UV-Visible Absorption, and TEM Investigation

Concentration-dependent luminescence of Tb3+ ions in high calcium aluminosilicate glasses

Structural changes of Ag+–Na+ ion exchanged soda-lime glasses investigated by scanning electron microscopy and infrared reflectivity

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