Germanium oxide (GeO2) and tellurium oxide (TeO2) based glasses are classed as the
heavy metal oxide glasses, with phonon energies ranging between 740cm− 1 and 880cm …

Ultraviolet–visible–near infrared (UV–vis–NIR) absorption and photoluminescence of (25−
x) La 2 O 3–25B 2 O 3–50GeO 2 glass series have been studied with different …

Structural modification of conventional Yb 3+ doped phosphate glass by GeO 2 was shown
to significantly improve both thermal and spectroscopic properties, namely, transition …

Due to the high transparency, high Verdet constant, as well as easy processing properties,
rare-earth ion-doped glasses have demonstrated great potential in magneto-optical (MO) …

Tm-doped alkali germanate glass is investigated for use as a laser material. Spectroscopic
investigations of bulk Tm-doped germanate glass are reported for the absorption, emission …

New magnetic glass compositions, based on system (100-x)(60GeO 2-25B 2 O 3–4Al 2 O 3-
10Na 2 O–1PbO)–xTb 4 O 7 were prepared by the melt-quenching technique. The materials …

The physical, optical, photoluminescence properties of (54-x) TeO 2− 10ZnO− 35BaO− 1Sm
2 O 3− xGd 2 O 3, where 0≤ x≤ 3 (mol%) are investigated in this research. Five samples of …

Raman and infrared spectroscopy were used to determine the structure of glasses for
compositions хK 2 O-(100-х) GeO 2, where х= 0, 10, 20, 30 и 40 mol%. Curve-fitting was …

The study is based on the application of sulfuric acid in germanium leaching process, the
leaching kinetic of high grade germanium-containing materials with sulfuric acid as solvent …

In this study, the structure of glass network was adjusted through controlling the numbers of
non-bridging oxygens (NBOs) and bridging oxygens (BOs) by adding lanthanide additive Lu …