Vanadyl doped Li-zinc borate glasses: Optical and ESR study

Farouk, M.; Mokhtar, H.M.; El-Fattah, Zakaria M. Abd; Samir, A.

doi:10.1016/j.jnoncrysol.2021.120964

Cited by 9 publications

(2 citation statements)

References 43 publications

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“…Election spin resonance (ESR) of V 4+ ions in various borate, sulphate and oxide glasses have been studied in the past [1][2][3][4][5][6][7][8][9][10][11][12]. The ESR of vanadium doped glasses [8,12] indicated that the V 4+ ions in these glasses were present as a vanadyl-type structure in a ligand field with a fourfold symmetry (C 4v symmetry).…”

Section: Introductionmentioning

confidence: 99%

“…The coordination of the VO 2+ ions is found to vary with the concentration of alkali oxide. In these investigations [1][2][3][4][5][6][7][8][9][10][11][12], however, the concentration of vanadium was very low so that it could serve as a spectroscopic probe or impurity in the glasses. Not much work has been reported on vanadium rich glasses.…”

Section: Introductionmentioning

confidence: 99%

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Electron Spin Resonance of V4+ Ions in K2O-B2O3-V2O5 Glasses

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et al. 2023

IJFMR

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In the present work the ESR study of potassium borovanadate (K2O-B2O3-V2O5) glasses is reported at room temperature and liquid nitrogen temperature. The spectra at liquid nitrogen temperature is similar to at room temperature except the indusial hyperfine lines are sharper and more intense which might be ascribed to a spin-lattice relaxation effect. The ESR parameters were calculated at room temperature and shows that in-plane π bonding is somewhat covalent and covalency is nearly independent of concentration of K2O. The octahedral site with a tetragonal compression gives g value in the order g׀׀< g< ge(=2.0023). It is observed that the V4+ ions in the present sample exist as VO2+ ions in octahedral coordination with a tetragonal compression and belong to C4v symmetry.

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