Manganese modified structural and optical properties of bismuth silicate glasses

Dult, Meenakshi; Kundu, R. S.; Berwal, Neelam; Punia, R.; Kishore, N.

doi:10.1016/j.molstruc.2015.02.025

Cited by 23 publications

(2 citation statements)

References 26 publications

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“…From Table 1 the density of the glass samples decreases as the concentration of the dopant increases. The decreasing trend in density with increment of MnO 2 content is expected in the present system as heavier TeO 2 is being replaced by the lighter MnO 2 [5]. The replacement of TeO 2 with atomic mass of 127.6 gmol -1 by MnO 2 with atomic mass of 54.94 gmol -1 will give decrement to the density in the glass system.…”

Section: Density and Molar Volumementioning

confidence: 50%

Optical Properties of Silica Borotellurite Glass Doped with Manganese Oxide

Zaitizila

Halimah

Muhammad

et al. 2017

SSP

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Silica borotellurite glasses doped with manganese oxide with chemical formula {[(TeO2)0.7(B2O3)0.3]0.8[SiO2]0.2}1-x{MnO2}x (where x = 0.0, 0.01, 0.02, 0.03, 0.04 and 0.05 molar fraction) were fabricated. Silica were extracted from the burning process of rice husk. Glass samples were prepared by using the melt-quenching technique. The FTIR spectra showed that the addition of MnO₂ contributed to the transformation of TeO4 to TeO3. The diffraction pattern of XRD showed a broad hump which indicates the amorphous nature of the samples. The result for both optical band gap and Urbach energy showed decreasing trend as the concentration of manganese increased.

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Section: Density and Molar Volumementioning

confidence: 50%

Optical Properties of Silica Borotellurite Glass Doped with Manganese Oxide

Zaitizila

Halimah

Muhammad

et al. 2017

SSP

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“…These glasses have important applications in the field of glass ceramics, reflecting windows, layers for optical and electronic devices, plasma panel displays, thick film conductors, sealing glasses for metals, and so forth [10][11][12][13][14]. The structural and optical properties of Fe 2 O 3 , TiO 2 , and MnO 2 modified bismuth silicate glasses have been extensively studied recently [15][16][17][18]. ZnO modified bismuth silicate glasses may be good candidates for many technological applications being ZnO a wide band gap ( ) semiconductor having large excitonic binding energy.…”

Section: Introductionmentioning

confidence: 99%

Optical Characterization of Zinc Modified Bismuth Silicate Glasses

Parmar

Hooda

Kundu

et al. 2015

International Journal of Optics

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The optical characterization of glass samples in the system 40SiO2·xZnO · (60-x)Bi2O3withx=0, 5, 10, 15, 20, 25, 30, 35, and 40 prepared by conventional melt-quench technique has been carried out in the light of Hydrogenic Excitonic Model (HEM). The absorption coefficient spectra show good agreement with theoretical HEM for the present glass system and the values of different parameters likeEg,R,Γ1,Γc, andCohave been estimated from fitting of this model. The values of energy band gap estimated from fitting of HEM with experimental data are in good agreement with those obtained from Tauc’s plot for direct transitions. The band gap energy is found to increase with increase of ZnO content. The decrease in values of Urbach energy with increase in ZnO content indicates a decrease in defect concentration in the glass matrix on addition of ZnO content. Optical constantsnandkobeyk-kconsistency and the dielectric response of the studied glass system is similar to that obtained for Classical Electron Theory of Dielectric Materials. The calculated values of the metallization criterion (M) show that the synthesized glasses may be good candidates for new nonlinear optical materials.

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