The electron paramagnetic resonance and optical spectra of copper and vanadium in phosphate glasses

IR and ESR investigations on V2O5–P2O5–BaO glass system with opto-electronic potential

“…ESR parameters for vanadium ions in the studied glasses are given in Table 1. The values obtained by us are in good agreement with other results reported in literature [18][19][20]42,43]. [7,27,44].…”

“…This distribution mode of vanadium ions in phosphate matrix is a result of its polymeric structure which can fix the metallic ions in some concrete positions. The 16-line feature with eight parallel and eight perpendicular lines is typical of the unpaired (3d 1 ) electron of VO 2+ ion associated with 51 V isotope (I= 7/2) in an axially symmetric crystal field [18][19][20].…”

“…Vanadium ions are very suitable to be used in glasses because they are characterized by partially filled d shell which can exist in at least two valency states [17]. Most of the papers showed that in vanadium doped phosphate glasses the main redox state is V 4+ but spectroscopic data show the appearance of vanadyl VO 2+ ions [18][19][20].…”

The local structure and magnetic interactions between Fe3+ and V4+ ions in lithium–phosphate glasses

“…Using electron paramagnetic resonance (EPR) Bogomolova et al [2] and Hosono et al [6], have found two sets of hyperfine structure for vanadyl ions in some phosphate glasses containing Mg, Zn, Be or Cd as modifier cations. In general, there is a possibility for the vanadium ion to change its oxidation state during the melting and quenching process of glass preparation.…”

Paramagnetic Species in Ion Implanted Phosphate Glasses

“…The absorption bands (spectrum 1) at 370, 460 and 730 nm are seen. They are typical for V3+ in phosphate glasses [22][23][24]. No EPR spectrum is observed for this sample.…”