X-ray diraction, infrared (IR), Raman spectroscopy and scanning electron microscope techniques have been used to investigate the microstructural properties of glass materials.In this work, a new type tellurite based optical glasses with TeO2/Nb2O5/TiO2 for dierent xNb2O5 (x = 5, 10, 15, 20 mol.%) compositions at constant 5 mol.%TiO2 ratio were prepared.The eect Nb2O5 contents on structural unit (95 -x)TeO2 (x)Nb2O55TiO2 network, intensity ratios peaks investigated.The results indicate that...

Abstract The microstructures of (1 − x )(TeO 2 )– PbF , ( = 0.1, 0.15, and 0.25 mol) glasses were investigated by using the Raman spectroscopic technique. effect compositions on TeO glass networks intensity ratios deconvoluted peaks determined. results confirm that addition modifiers to network former shifts peak wavenumber values for each band in 167–165, 652–645, 747–755 cm −1 regions. structural evaluation was recognized from spectra, with units described as [TeO 3+1 ] polyhedra, 3...

Indoor wireless positioning systems enables location based applications to work properly inside buildings. Since GPS technology could not supply desired precision in indoor environment, there has been many developed on different technologies solve localization problem. In this paper, navigation system Ultra-Wideband proposed. Then, ranging model of the tracking is established. Trilateration, Least Square Estimation and Centroid Method algorithms are applied provide a realistic comparison...

Abstract Ternary tellurite based glasses in the (TeO 2 )(ZnO)(TiO ) system were prepared and its optical properties crystallization kinetics investigated by using UV‐VIS spectrophotometer differential thermal analyzer (DTA). All transparent from visible to near infrared region for different ZnO glass compositions (x=0.05, 0.10, 0.20, 0.30 mol). In experiment, band gap Urbach energies estimated absorption spectra between 400 800 nm wavelength region. The observed results confirm that addition...

Abstract A type of thulium doped tellurite based optical glasses was prepared through conventional melt quenching technique. In the experiments, effect different Tm 3+ ion concentration and glass composition on properties (TeO 2 ) (1‐x‐y) (Nb O 5 (x) (TiO (y) (x=0.05, 0.10, 0.15, 0.20 mol) have been investigated by using UV‐VIS‐NIR spectrophotometry measurements in a wavelength range 400‐2000 nm. Considering absorption for 1.0mol% 0.9 0.05 glass, 1 G 4 , 3 F H bands were observed from 6...

The objective of this study is to design a unique glass network composed TeO2-ZnCl2-Nb2O5-TiO2 investigate the microstructural and mechanical properties. In experiment, proposed was produced using melt quenching method. properties hardnesses derived from XRD, SEM Vicker’s Hardness measurements. Microstructures crystalline phases determined XRD diffractometry 20 90 range. estimated prepared samples were -TeO2 -TiO2. As conclusion, tellurite-based oxide materials have become very much...

By conventional melt-quenching, we have prepared novel optical amorphous borate-based glass sample series of B2O3-ZnO-TiO2 host materials to investigate their properties and microstructure.Following the successful preparation, density ρ molar volume Vm samples were calculated by Archimedes principle.In addition, microstructural determined experimental techniques, such as Fourier transform infrared, Raman, X-ray diffraction, scanning electron microscopy, UV-vis absorption techniques.The...

Tm³⁺-doped glasses have two emission bands that peak around 1470 nm and 1800 in the near infrared, making them potentially important development of fiber-optic amplifiers fiber lasers. The relative strength quantum efficiency these depend on glass composition as well active ion concentration. In this study, we investigated variation luminescence strengths a function Tm³⁺ concentration new type tellurite glass. experiments, sets samples with host...

The investigation covers the thermal and linear optical properties of binary TeO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -ZnCl glass systems contain different ZnCl compositions ranging from 10 to 40mol%. Preparation were realized by melting mixture chemicals in a platinum crucible at 850°C for 60 min air. In experiments, analysis was performed determine characteristics such as, transition (T...

In this research, we report Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> doped chalcogenide based glasses, well known for infrared transparency with various applications in the photonics and optoelectronics. glasses were prepared by using vertical furnace an argon gas atmosphere. For structural spectroscopic measurements, thin films at about 460nm thicknesses deposited radio-frequency (RF) magnetron sputtering technique. annealed...

Abstract The objective of this study is to design a unique glass network composed TeO 2 -ZnCl -Nb O 5 -TiO investigate the optical, thermal and microstructural properties. In experiment, proposed was produced using melt quenching method. optical properties band-gap derived from UV-VIS spectrophotometry experiment. Following properties, including melting point transition phase calculated through Differential Thermal Analysis (DTA/DSC), X-ray diffraction (XRD) Scanning Electron Microscope...