Structural analysis of novel oxyfluoroborate glasses: Correlation between elastic and compositional parameters

Rao, G. Srinivasa; Sudhakar, B.K.; Chand, Naresh; Johnson, B.; Ram, P.V.S. Sai; Sastry, P. S.; Devasahayam, V.

doi:10.1016/j.matlet.2011.10.009

Cited by 9 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, this lead to more add-on of the localized states within the gap [13][32]. Rao et al, (2012) [33] mentioned that reduction in optical energy band gap (E opt ) speci es formation of more nonbridging oxygen atoms (NBO). The details on the degree of the disorder of the atoms in the materials (amorphous and crystalline) is…”

Section: Resultsmentioning

confidence: 99%

Dielectric Constant, Metallization Criterion and Optical Properties of CuO Doped TeO2–B2O3 Glasses

Nazrin

Umar

Halimah

et al. 2022

J Inorg Organomet Polym

View full text Add to dashboard Cite

Copper oxide doped TeO 2 -B 2 O 3 glass system with empirical formula; [(B 2 O 3 ) 0.3 (TeO 2 ) 0.7 ] 1-x (CuO) x using the melt quenching method, where x = 0.0, 0.01, 0.015, 0.02, and 0.025 was combined. The glass samples' density and molar volume were measured, followed by characterizations using the UV-Vis, Fourier transform infrared (FTIR) and X-ray diffraction (XRD) spectroscopes. The amorphous or glassy nature of glass samples was proven by the XRD spectra except for the pure borotellurite sample which showed a peak around 2θ = 20 o , indicating α-TeO 2 crystalline phase presence. The FTIR spectral analysis suggested the presence of BO 3 , TeO 3 and TeO 4 as the structural functional units in the glass samples.The UV-Vis spectra showed no presence of any sharply de ned edges, a rming the amorphous or glassy nature of the glass materials. Physical parameters e.g. molar volume, density, oxygen packing density (OPD), inter ionic distance of Cu 2+ ions, concentration of copper ion per unit volume (N), as well as the polaron radius data were presented and discussed. Also, the direct bandgap (3.8900 to 3.5900 eV) , indirect bandgap (3.3200 to 3.0800 eV), refractive index (2.318 to 2.378), dielectric constant (5.3731 to 5.6549), optical dielectric constant (4.3731 to 4.6549), refractive index based metallization criterion (0.406885 to 0.391916) and the band gap based metallization criterion (0.407431 to 0.392428) were analysed and discussed. Based on the metallization criterion and values of refractive index, the glasses are good candidates for optoelectronic and laser applications. Meanwhile, the dielectric constants' values of the present glasses indicate their suitability bandpass lters and microelectronic substrates applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Dielectric Constant, Metallization Criterion and Optical Properties of CuO Doped TeO2–B2O3 Glasses

Nazrin

Umar

Halimah

et al. 2022

J Inorg Organomet Polym

View full text Add to dashboard Cite

show abstract

“…The structure of various units in the glass and their modifications are explained in terms of compositional dependent elastic properties [39][40][41][42]69]. Hence, the theoretical determination of these properties is very helpful for the understanding development network of glassy materials.…”

Section: Discussionmentioning

confidence: 99%

Influence of manganese ions on elastic and spectroscopic properties of ZnO doped novel calcium fluorophosphate bio active glasses

Chand¹,

Sudhakar²,

Ravikumar

et al. 2021

Phys. Scr.

View full text Add to dashboard Cite

The glass system 20CaF 2 -20ZnO-(60-x)P 2 O 5 :xMnO with 0x5.0 was prepared and investigated. The structural changes induced by the addition of MnO in the glass network were explained by using physical, elastic, thermal, chemical durability and spectroscopic studies. Results indicate that with the increase of concentration of MnO content from 1 to 5 mol% the parameters like density, pH of the immersion liquid, elastic moduli and glass characteristic temperatures increases. While the dissociation rate, the Poisson's ratio and volume per mol decreases and signifying the increased mechanical strength of the prepared glasses. FTIR spectral analysis predicts that all the specific vibrational bands of phosphate bonds like bridging oxygen with phosphorous action, linkages like P-O-P, O-P-O and the crossed linkages like P-O-Mn & P-O-Zn are affected by the incorporation of MnO in the glass matrix. The changes observed in peak positions and intensities of all vibrational bands of IR spectra and optical absorption spectra confirm that manganese ions behaves as a glass former and also as a glass modifier depending on the concentration of MnO. The analysis of the optical absorption spectra of the glasses in particular the crystal field and interelectronic repulsion parameters shows that manganese ions are predominantly occur in the divalent state and occupy tetrahedral sites in the glass matrix when the concentration of MnO in the CaF 2 -ZnO-P 2 O 5 glasses exceeds 1.0 mol%.

show abstract

Effect of incorporation of alkali earth metal oxide on structural, optical and DC conduction mechanism in tellurium-phosphate glassy systems

Mandal

Modak²,

Patra³

et al. 2023

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Structural analysis of novel oxyfluoroborate glasses: Correlation between elastic and compositional parameters

Cited by 9 publications

References 15 publications

Dielectric Constant, Metallization Criterion and Optical Properties of CuO Doped TeO2–B2O3 Glasses

Dielectric Constant, Metallization Criterion and Optical Properties of CuO Doped TeO2–B2O3 Glasses

Influence of manganese ions on elastic and spectroscopic properties of ZnO doped novel calcium fluorophosphate bio active glasses

Effect of incorporation of alkali earth metal oxide on structural, optical and DC conduction mechanism in tellurium-phosphate glassy systems

Contact Info

Product

Resources

About