Effect of Sm³⁺ Concentration on Physical Properties of Magnesium Tellurite Glasses Containing Silver Nanoparticles

Abstract

A series of tellurite glass containing samarium ion and silver nanoparticles with a composition of (89.6-x)TeO2-10MgO-(x)Sm2O3-0.4AgCl with 0.2 ≤ x ≤ 1.0mol% have been synthesized by a conventional melt quenching technique. The X-ray diffraction pattern verified the amorphous nature of glasses. A systematic study on the relationship between Sm2O3 concentration and the physical properties of the glass has been made. The effect on the progressive replacement of TeO2 by Sm2O3 on density, molar volume, refractive index and electronic polarisability has been investigated. The results show that density and ionic packing density are in the range of 4.91-5.04 g cm-3 and 0.444 – 0.455, respectively, increases as the amount of Sm2O3 is increased up to 0.8 mol% and decrease afterward. However, the molar volume which is in between, 29.59-30.26 m3 mol-1 decreasing as the amount of Sm2O3 is increased up to 0.8 mol% and increase thereafter. Meanwhile the refractive index which is deduced from optical energy band gap is found to possess a value in the range of 2.37 to 2.45 and electronic polarisability is in the range of 7.14-7.51Å3. All the results will be discussed with respect to the glass composition.

Visible and near-infrared photoluminescence enhanced by Ag nanoparticles in Sm3+-doped aluminoborate glass

“…Among the rare-earth ions, Sm 3+ has a 4f 5 electron configuration and shows strong PL in the orange-red ( 580-660 nm) and near-infrared regions (~0.95-1.32 μm) under excitation at  = 400 nm, which makes Sm 3+ -doped glasses good candidates for solar spectral converters [20,21]. Several researchers have focused on the PL enhancement owing to Sm 3+ via SPR in various glass matrixes, such as tellurite-based glass [22][23][24][25], phosphate-based glass [26,27], lead-based glass [28], oxyfluoride glass [29], antimony glass [30], chloroborosilicate glass [31], and ion-exchanged alkali containing glass [32,33]. Feras et al enhanced the PL intensity of Sm 3+ up to seven times in tellurite glass [22].…”

Spectroscopic and Surface Wetting Properties of Samarium Doped Lead-Tellurite Glass Embedded with Titanium Nanoparticles: Self-Cleaning Glass

“…Sm 2 O 3 is thought to have a lower a nity for oxygen attraction than TeO 2 , which results in a larger interstitial site that is unoccupied(Mawlud, 2018). More addition of Sm 2 O 3 up to 2.5 mol%, results in a signi cant drop in molar volume to 25.89 m 3 /mol, this impact can be compensated by the fact when the Sm 3+ mol friction concentration increased, the structure of glasses will become more compacted(Yusoff and Sahar, 2016) Ahmed et al 2016, Yusof et al, 2015…”

“…Also, electronic polarizability declines as Sm 2 O 3 is increased up to 2.5 mol%. This could be a result of the formation of a large amount of BO, which is more interesting to polarize(Yusoff and Sahar, 2016). Table2demonstrates the variations of the refractive index and polarizability as a function of TiO 2…”