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Dr. Hytham Ahmed Abd El-Ghany Mohammed :: Publications:

Physical and Optical Characterization of Manganese Ions in Sodium-Zinc-Phosphate Glass Matrix
Authors: H.A. Abd El-Ghany
Year: 2018
Keywords: Not Available
Journal: International Advanced Research Journal in Science, Engineering and Technology
Volume: 5
Issue: 12
Pages: 43-53
Publisher: IARJSET
Local/International: International
Paper Link:
Full paper Hytham Ahmed Abd El-Ghany Mohammed_full.pdf
Supplementary materials Not Available

In order to investigate the significant modifications induced by incorporation of manganese ions in sodium-zinc-phosphate glass matrix, a glass system of chemical formula 40P2O5-40ZnO-(20-x)Na2O-xMnO (where, x varied from 1 to 6 mol%) was prepared using the traditional melt quenching technique. The values of the glass density were increased and those of the molar volume were decreased by increasing the content of MnO. In addition, the concentration of manganese ions and the related field strength were increased while the corresponding inter-ionic spacing and polaron radius were decreased. The spectroscopic studies of all samples were carried out over (190-2500 nm) spectral range. The optical transmission of the prepared glass in the visible-near IR spectral range is enhanced by increasing the MnO content where it reaches a maximum value of about 86% at concentration 3% of MnO. This excellent transmission in such spectral range suggested the use of the present glass in many technological applications such as optical filters, IR domes, modulators, laser windows and lenses especially for Nd:YAG lasers. The optical band gap energy and the Urbach energy were determined. The refractive index was found to be decreased by increasing the MnO concentration from 1% to 3% then increased by increasing the MnO concentration from 3% to 6%. Other related physical parameters such as dielectric constant, electric susceptibility, molar polarizibility and metallization criterion were evaluated. The results predicted the working of the present glass in the range of nonlinear optical materials.

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