EPR study of molybdenum-lead-phosphate glasses

Dielectric dispersion and spectroscopic investigations on Na2SO4–B2O3–P2O5 glasses mixed with low concentrations of TiO2

“…So in terms of the polaron exchange the variation of optical band gap can be explained as fallows: the electron delivered by the impurity atom at the Ti 4+ site converts this into a lower valence state Ti 3+ and at the next stage, the trapped electron at this Ti 3+ site is transferred to the neighboring new Ti 4+ site by absorbing a photon energy. Thus the optical absorption in the glass samples is dominated by polaronic transfer between the Ti 3+ and Ti 4+ species [37,38].…”

Physical properties and electrochemical performance of molybdenum–lead-germanate glasses and glass ceramics

“…Independent of the nature of the alkaline ion, the electrical conductivity in the lithium-molybdenum-phosphate glasses was assumed to be due to the electronic hopping from the lower valence state Mo 5 þ ion (donor level) to the higher valence state Mo 6 þ ion (acceptor level) [28]. …”

EPR and Optical Absorption Spectral Investigations of Cu2+ in Bi2O3-ZnO-B2O3-Li2O Glasses

“…Unconventional glasses containing Bi 2 O 3 as glass former are of great interest because of their potential applications in industry and many allied areas [5][6][7]. EPR investigations of Cu 2+ ions in glasses are interesting and have received a considerable attention due to the sensitivity of parameters to local symmetry and have been studied in wide variety of glasses [8][9][10][11][12][13]. Optical absorption of transition metal (TM) ions in glasses is influenced by host structure into which the transition metal ions are incorporated.…”