TELLURITE GLASSES THESIS

Zainal, Optical properties of ternary tellurite glasses, Materials Science-Poland. LiNbO3 is an important crystal which has piezoelectric, ferroelectric and electro-optical functions. The Eg of the three samples were obtained as 3. Then there was a sudden change upward near 8. The effect of Ni-doping on the structural and optical properties of the layers was evaluated using appropriate techniques. The X-ray diffraction studies revealed that nickel atoms were successively incorporated into ZnO host matrix without forming any detectable secondary phase.

Sib Krishna Ghoshal, Prof. Pal, Structural characterization of borate glasses containing zinc and manganese oxides, Journal of Modern Physics. The significant enhancement in the luminescence with the increase of AgCl is ascribed to the local field enhancement induced by Ag0 surface plasmon resonance and the energy transfer from fluorescent Ag0? Rajendraprasad Reddy, Mutsumi Sugiyama, K. The films had hexagonal shaped grains and the evaluated grain size varied in the range of 20 – 48 nm. Komatsu, An interpretation of optical properties of oxides and oxide glasses in therms of the electronic ion polarizability and average single bond strength, Journal of the University of Chemical Technology and Metalurgy.

tellurite glasses thesis

The absorption peaks around cm-1 and cm-1 are related to the stretching vibrations of the hydroxyl group participating in the strong metal and hydrogen bonding, respectively. Although the thesiw infrared mm band is studied in this paper, telpurite approach is applicable to other spectral bands.

It has a wide range of applications. The observed glass density ranges from 5. The films had hexagonal shaped grains and the evaluated grain size varied in the range of 20 – 48 nm.

The photons of the gas excite electrons from the valence band to the acceptor level, which alters the electron density in these two states.

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Spectrum Study of Crystal Fe: The absorption coefficient was calculated by transmission and reflection spectrum. Luminescence of erbium doped tellurite glass containing silver nanoparticles. Komatsu, An interpretation of optical properties of oxides and oxide glasses in therms of the electronic ion polarizability and average single bond strength, Journal of the University of Chemical Technology and Metalurgy.

The improved optical and structural properties suggest that the studied glasses are potential candidates for nanophotonic devices. Mohan Babu, Suman Shakya, et al. This change in reflectivity represents the optical signal of the sensor, which is probed remotely with a laser such as a helium-neon glassse. Optical Properties of Erbium Doped Tellurite These films achieve tunable band gap characteristics by means of changing the dopant concentration.

Optical Properties of Erbium Doped Tellurite Glasses

Each dopant creates an acceptor energy level within the bandgap of the substrate so that the energy gap between this acceptor level and the valence band matches the quantum of energy emitted by the gas of interest. Mn doped ZnO films with different doping concentration were synthesized by sol gel method using the spin coating technique. The glqsses range is nmnm. The structural properties measured by using FTIR show that as the AgCl content increases, teklurite sharp infrared IR absorption peaks were consistently shifted from Pal, Structural characterization of borate glasses containing zinc and manganese oxides, Journal of Modern Physics.

Forbidden band Eg was obtained from absorption spectrum. Forbidden band of LiNbO3 crystals was decreased as the iron doped.

Optical Properties of Erbium Doped Tellurite Glasses

Rajendraprasad Reddy, Mutsumi Sugiyama, K. They were characterized by X-ray diffraction, transmission electron microscopy, differential thermal analysis DTAand Fourier transform infrared FTIRultraviolet-visible-near infrared and photoluminescence spectroscopy. Cr Crystals Doped with HfO 2. All the grown films were polycrystalline with the plane as the preferred orientation and the peak position shifted towards higher diffraction angle with the increase of doping content in the films.

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The effect of Ni-doping on the structural and optical properties of the layers was evaluated using appropriate techniques. Concentration dependent chemical durability, thermal stability and spectroscopic properties, Journal of Non-Crystalline Solids. Naqib Asyraf Luminescence of erbium doped tellurite glass containing silver nanoparticles.

The optical studies revealed a decrease of transmittance with the increase of Ni-doping content in the films and the evaluated energy band gap was found to be direct that decreased from 3. Ahmed, New tellurite glasses: Affa Rozana Abdul Rashid, P.

tellurite glasses thesis

The X-ray diffraction studies revealed that nickel atoms were successively incorporated into ZnO host matrix without forming any detectable secondary phase. Abstract Enhancing the optical properties of rare-earth doped inorganic glasses by embedding metallic nanoparticles NPs of controlled sizes and examining the mechanism of enhancement are important and challenging. The transmission and reflection spectrum. Simon, Structural and biological investigations of phosphage glasses with silver, Rom.

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TELLURITE GLASSES THESIS

More information and software credits. It shows an initial decrease of band gap for small concentrations of Mn, followed by an increase at higher Mn doping concentrations. Luminescence of erbium doped tellurite glass containing silver nanoparticles Jamaludin, Mohd. Mysen, Physics and chemistry of silicate glasses and melts, Eur. Enhancing the optical properties of rare-earth doped inorganic glasses by embedding metallic nanoparticles NPs of controlled sizes and examining the mechanism of enhancement are important and challenging.

The optical studies revealed a decrease of transmittance with the increase of Ni-doping content in the films and the evaluated energy band gap was found to be direct that decreased from 3. Forbidden band of LiNbO3 crystals was decreased as the iron doped. Each dopant creates an acceptor energy level within the bandgap of the substrate so that the energy gap between this acceptor level and the valence band matches the quantum of energy emitted by the gas of interest. Thermal parameters such as glass transition temperature Tg , crystallization temperature Tc , melting temperature Tm and thermal stability? Pal, Structural characterization of borate glasses containing zinc and manganese oxides, Journal of Modern Physics. Naqib Asyraf Luminescence of erbium doped tellurite glass containing silver nanoparticles. The significant enhancement in the luminescence with the increase of AgCl is ascribed to the local field enhancement induced by Ag0 surface plasmon resonance and the energy transfer from fluorescent Ag0?

The absorption coefficient was calculated by transmission and reflection spectrum.

tellurite glasses thesis

LiNbO3 is an important crystal which has piezoelectric, ferroelectric and electro-optical functions. The observed glass density ranges from 5.

tellurite glasses thesis

Luminescence of erbium doped tellurite glass containing silver nanoparticles. The photons of the gas excite electrons hlasses the valence band to the acceptor level, which alters the electron density in these two states.

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Refractive index flasses optical properties, Journal of Optoelectronics tellurtie Advanced Materials. Forbidden band of LiNbO3 crystals was decreased as the iron doped. More information and software credits. Although the midwave infrared mm band is studied in this paper, the approach is applicable to other spectral bands. Optical Properties of Erbium Doped Tellurite Luminescence of erbium doped tellurite glass containing silver nanoparticles Jamaludin, Mohd.

These films achieve tunable band gap characteristics by means of changing the dopant concentration. Universiti Teknologi Malaysia Institutional Repository. Sm Al Salhi, M. The X-ray diffraction studies revealed that nickel atoms were successively incorporated into ZnO host matrix without forming any detectable secondary phase. Spectrum Study of Crystal Fe: The optical studies revealed theis decrease of transmittance with the increase of Ni-doping content in the films and the evaluated energy band gap was found to be direct that decreased from 3.

Zainal, Optical properties of ternary tellurite glasses, Materials Science-Poland.

Optical Properties of Erbium Doped Tellurite Glasses

The Eg of the three samples were obtained as 3. Ahmed, New tellurite glasses: Affa Rozana Abdul Rashid, P. The optical properties were characterized using UV-Vis where the transmittance and band gap value were affected by certain amount of Mn concentration.

Enhancing the optical properties of rare-earth doped inorganic glasses by embedding metallic nanoparticles NPs of controlled sizes and examining the mechanism of enhancement are important and challenging.

Forbidden band Eg was obtained from absorption spectrum. The XRD pattern confirms the amorphous nature of all samples. From PL spectra, excitation at nm and nm for up and down-conversion exhibits strong green and red emission comprised of three emissions band atand nm.

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The thermal, structural, and optical properties of these glasses were determined and analyzed. The dependence of the refractive indices, absorption edge and optical damage in congruent HfO2-doped LiNbO3 crystal are reported.

Luminescence of erbium doped tellurite glass containing silver nanoparticles

It shows an initial decrease of band gap for small concentrations of Mn, followed by an increase at higher Mn doping concentrations. The absorption coefficient of the three samples increased slightly in the beginning of the scanning. The significant enhancement in the luminescence with the increase of AgCl is ascribed to the local field enhancement induced by Ag0 surface plasmon resonance and the energy transfer from fluorescent Ag0?

The absorption peaks around cm-1 and cm-1 are related to the stretching vibrations of the hydroxyl group participating in the strong metal and hydrogen tnesis, respectively.

Optical Properties of Erbium Doped Tellurite Glasses

Then there was a sudden change upward near 8. The improved optical and structural properties suggest that the studied glasses are potential candidates for nanophotonic devices. This change in reflectivity represents the optical signal of the sensor, which is probed remotely with a laser such as a helium-neon laser.

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