Influence of manganese doping on elastic and structural properties of silica borotellurite glass

Abstract

The quaternary glass system tellurium dioxide, boron trioxide, silicon dioxide and manganese dioxide where x = 0.00 to 0.05 M fraction has been successfully prepared via conventional melt and quench-casting technique. The density was determined by Archimedes method with distilled water as buoyant liquid. The results showed that the density decreases and molar volume increases with respect to manganese concentration. FTIR spectral studies suggest that glass network is mainly built up of boron trioxide, tetrahedral boron, tellurium trioxide, trioxotellurate and silicon dioxide structural units. The ultrasonic velocities and elastic moduli were recorded using a pulse-echo method at frequency 5 MHz at room temperature. Some other physical properties such as Debye temperature, softening temperature, microhardness, Poisson's ratio, fugacity, fractal bond connectivity and Cauchy relation were determined. Results indicate that these parameters depend upon the composition of the glass system and the dopant concentration, MnO2 inside the glass system.

On the Incorporation of Pristine and Pre-vitrified Alkaline Battery Waste into Non-structural Clay Bricks

“…This behavior could be related to the FTIRspectral evidence registered in Fig. 3d which suggested that Mn would favor the formation of less rigid glasses by the apparition of BO 3 units in the glass structure [67]. Nevertheless, these aspects are out of the scope of this work and more research must be conducted to address these issues.…”

“…These spectral modifications indicate that manganese modifies the glass structure by changing the balance of tetrahedral BO 4 and trigonal BO 3 in the manganese-rich frits [66]. The increase of manganese in the glass increases the concentration of BO 3 units in the resulting glass, causing the glass to be less rigid [67]. This rigidity change would explain the differences [66,67,70] recorded in the particle size distribution of the fritted materials (Fig.…”

“…The increase of manganese in the glass increases the concentration of BO 3 units in the resulting glass, causing the glass to be less rigid [67]. This rigidity change would explain the differences [66,67,70] recorded in the particle size distribution of the fritted materials (Fig. 1).…”

Mechanical and radiation shielding properties of CuO doped TeO2–B2O3 glass system

“…Besides that, Elokr and Aboudeif (2016) [22] had stated that the increment of the concentration molar fraction tends to be of a higher rigidity of the glass network and decreases the NBO concentration which results to an increment of both ultrasonic velocities. Both velocities in the studied glass system were found to be increasing due to the transformation of coordination that affects the formation of more bridging oxygen [25].…”

Polarizability of erbium-doped zinc-tellurite glasses coated with graphene oxide for telecommunication devices

“…Up to now, the tellurite-based glasses have been frequently reported as the best host glass for fiber lasers, waveguide, and amplifiers [9] due to its unique physical and optical properties, such as low melting point, high refractive index, low cut-off phonon energy, wide spectral transparency, and excellent infrared trasmission [10][11][12][13]. These features can be maximized through GO coating as it can be applied for future fiber optics.…”