“…The glass samples' density increased with the presence of Dy2O3 concentration from 0.1 to 2 mol% due to the larger molecular mass of Dy2O3 compared to B2O3. The density of Dy_1.0 glass is 2.98 gcm -3 , which is higher than that of S6 glass [14] and Dy2O3 doped lithium borate glass [17]. The enhancement of molar volume occurs with the increase of the Dy2O3 concentration, indicating excessive NBOs in the glass structure.…”
Section: Glass Preparation and Characterizationmentioning
confidence: 87%
“…The addition of Dy 3+ in glasses such as tellurium-borate glass [9], tellurite glasses [10], borotellurite glasses [11], silicate glass [12], fluorosilicate glass [13] and borosilicate glasses [14] has been investigated. It was shown that Dy 3+ ion-doped glasses generated a strong white emission, which makes them suitable for solidstate lighting (SSL) or white illumination applications.…”
“…The glass samples' density increased with the presence of Dy2O3 concentration from 0.1 to 2 mol% due to the larger molecular mass of Dy2O3 compared to B2O3. The density of Dy_1.0 glass is 2.98 gcm -3 , which is higher than that of S6 glass [14] and Dy2O3 doped lithium borate glass [17]. The enhancement of molar volume occurs with the increase of the Dy2O3 concentration, indicating excessive NBOs in the glass structure.…”
Section: Glass Preparation and Characterizationmentioning
confidence: 87%
“…The addition of Dy 3+ in glasses such as tellurium-borate glass [9], tellurite glasses [10], borotellurite glasses [11], silicate glass [12], fluorosilicate glass [13] and borosilicate glasses [14] has been investigated. It was shown that Dy 3+ ion-doped glasses generated a strong white emission, which makes them suitable for solidstate lighting (SSL) or white illumination applications.…”
“…1 . The density of the samples was determined via the Archimedes’ Principle [ 20 , 21 ]. The composition of the tested samples has been listed in Table 1 .…”
Section: Methodsmentioning
confidence: 99%
“…The appropriate amounts of these powdered samples are taken for different characterization studies of XRD and FTIR spectroscopy, respectively. The details of the instrumentation and the formulations used for the physical and the structural studies have been discussed in detail in our previous studies [ 21 – 25 ]. Fig.…”
The primary aim of this investigation is to synthesize a novel glass system with a composition (35+x) PbO-5TeO
2
-20Bi
2
O
3
-(20-x) MgO-20B
2
O
3
(where
x
=0, 5, 10, 15, and 20 mol%) by melt quenching method. The confirmation of the amorphous behavior and the presence of the various vibration modes and stretching modes have been analyzed using the XRD and FTIR techniques, respectively. The radiation shielding parameters of these glasses were reported using MCNP5 simulation. The effects of PbO on the MCNP5 parameters were investigated in detail. The mass attenuation coefficient (MAC) was simulated via MCNP5 code, and it was found that the MAC values from MCNP5 all follow the same trend as the XCOM data. The similarity means that the two simulations strongly agree with each other. The linear attenuation coefficient (LAC) was calculated for all the glasses. The glass sample with 55 mol% of the PbO has the greatest LAC at any energy, such as 0.317 at 10 MeV, the lowest investigated energy. From the LAC values, other parameters such as transmission factor (TF), lead equivalent thickness (
d
lead
), and half-value layer (HVL) were reported. The results for the TF of the glasses revealed that the glass systems become more effective as their thickness increases. Glass sample with 35 mol % of the PbO recorded the highest TF at all energies due to its lack of PbO content, such as 15.533% for a thickness of 1 cm and 6.122% for 1.5-cm thickness at 0.3 MeV. The radiation protection efficiency (RPE) was also determined, and we found that the glasses with the greater PbO content and least MgO content have the highest RPE. Therefore, based on the RPE values, glasses with the greater PbO are the most effective radiation shield from the investigated glasses.
“…It is generally accepted that broad bands in region of 680-730 cm −1 and 1200-1500 cm −1 are attributed to bending and stretching vibrations of B-O-B in BO 3 triangles of the boron-oxygen network, respectively [47,48]. The peak at about 708 cm −1 is due to the vibrations of B-O-Si bridges [49]. The vibrational area at 900-1100 cm −1 originates from B-O bond stretching of tetrahedral BO 4 units in various structural groups [50].…”
The glass prepared from sustainable raw materials yields interesting properties, besides the low cost and environmentally friendly. Two series of glass compositions based on B 2 O 3-P 2 O 5-Na 2 O-CaO added with bagasse (BG) and cassava rhizome (CR) were fabricated by melt-quenching technique, and their physical, mechanical and structural properties were studied. The physical properties such as density and molar volume were calculated and discussed. The elastic moduli, Poisson's ratio, Debye temperature, acoustical impedance and microhardness have been estimated based on pressure-controlled ultrasonic technique at 4 MHz frequency with normal and angle probes. It was found that the addition of bagasse and cassava rhizome leads to an increase of elastic constants, Debye temperature and microhardness of the prepared glass. Vickers hardness tester was also applied to determine microhardness of the glass using an applied load of 0.98 N. The values of microhardness obtained from both techniques were compared and a good correlation was observed. Moreover, the internal structural units of the glass samples have been estimated by FTIR. XRD spectroscopy was applied to confirm the amorphous nature in the glasses.
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