The PbO–Ga2O3 glass-forming system with a lead oxide content of more than 50 mol. % was studied. It was found that the introduction of lead oxide significantly affects the glass structure. Using vibrational spectroscopy methods, it was shown that PbO significantly reduces the number of Ga–O–Ga bridging bonds, which leads to a weakening of the glass network and the dominance of PbO4 pyramids in it. Structural changes lead to a significant change in the physicochemical properties of glasses. The article considers in detail the spectral and optical properties of the PbO–Ga2O3 system. The glasses have a wide transparency window (from 0.5 to 7.1 ?m), a high refractive index (?2.2) and a small Abbe number (about 12). The developed materials are promising for applications in optics and photonics for infrared devices.
Anastasia B. Terekhova – graduate student of The Department of Chemistry and Technology of Crystals, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
Dmitry A. Butenkov – postgraduate student of the Department of Chemistry and Technology of Crystals, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
Kristina I. Runina – Candidate of Chemical Sciences, junior research assistant of the Laboratory of Functional Materials and Structure for Photonics and Electronics of the Department of Chemistry and Technology of Crystals, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
Maria A. Uslamina – Candidate of Chemical Sciences, senior researcher of the Laboratory of Optical Materials, Technology of Mordovia State University, Saransk, Russia
Aleksandr A. Pynenkov – junior researcher of the Scientific and Educational Center “High-purity materials and elements of fiber optics and laser technology” of Mordovia State University, Saransk, Russia
Olga B. Petrova – Doctor of Chemical Sciences, Professor, Professor of the Department of Chemistry and Technology of Crystals, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
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