Luminescence Properties of TeO2-LiF-Gd2O3 Glasses

Structural and magnetic properties of MoO3–TeO2 glasses

A series of tellurite glasses containing MoO3 with the nominal composition x(MoO3)–(1 x)(TeO2), where x = 0.10, 0.20, 0.30, and 0.40, have been investigated using X-ray photoelectron spectroscopy (XPS) and temperature-dependent magnetization techniques. The Te 3d core level spectra for all glass samples show symmetrical peaks at essentially the same binding energies as measured for TeO2 oxide a...

Spectroscopic properties of the 1.4 μm emission of Tm ions in TeO2-WO3-PbO glasses

In this work, we report the spectroscopic properties of the infrared H4→F4 emission of Tm ions in two different compositions of glasses based on TeO2, WO3, and PbO for three Tm2O3 concentrations (0.1, 0.5, and 1 wt%). Judd-Ofelt intensity parameters have been determined and used to calculate the radiative transition probabilities and radiative lifetimes. The infrared emission at around 1490 nm ...

Optical spectroscopy of lanthanide ions in ZnO-TeO2 glasses.

Zinc tellurite glasses of compositions 19ZnO-80TeO2-1Ln2O3 with Ln = Eu, Er, Nd and Tm were prepared by melt quenching. The absorption spectra were measured and from the experimental oscillator strengths of the f-->f transitions the Judd-Ofelt parameters ohm(lambda) were obtained. The values of the ohm(lambda) parameters are in the range usually observed for oxide glasses. For Nd3+ and Er3+, lu...

Structural and magnetic investigations of Fe2O3–TeO2 glasses

A series of tellurite glasses containing Fe2O3 with the nominal composition x(Fe2O3)–(1 x)(TeO2), where x = 0.05, 0.10, 0.15, and 0.20, have been synthesized and investigated using X-ray photoelectron spectroscopy (XPS) and magnetization techniques. The Te3d core level spectra for all glass samples show symmetrical peaks at essentially the same binding energies as measured for TeO2 indicating t...

Reversible and irreversible electrical switching in TeO2-V2O5 based glasses

The switching phenomenon observed in electronically conductive glasses corresponds to a sudden decrease in electrical resistance of the sample when a large electric field is applied. A simple electrothermal model is developed which takes into account only a Joule effect overheating of the material. In a temperature range below the glass transition temperature, Tg, the switching is reversible. O...

Influence of manganese ions on spectroscopic and dielectric properties of LiF-SrO-B2O3 glasses