The structural dual role of Fe2O3 in some lead-phosphate glasses

Advantage of NMR and FTIR Spectroscopy to Determine Structure Role of CeO<sub>2</sub> in Complicated Borosilicate Glasses: New Approach

“…This is because of great overlap between mixed vibration modes of Si-O, B-O, Ce-O which may be hardly to be separated. Therfore, for example, we take the advantage of 11 B NMR spectrocopy in correlation to FTIR [11] [12] [13] [14] to get complete information about strucural role of Ce nuclei which cannot measured by NMR. In this respect, we analyzed FTIR spectra and dtermine the fraction of all foure coordinated species, which is termed B 4 , since ( ) ( ) …”

A Study of Electron Paramagnetic Resonance on Copper Ions on Alkali-Alkali Earth Zinc Phosphate Glass

“…The hyperfine parameters g ∥ , g⊥, A ∥ and A⊥are given in Table 2. Inspection these obtained values reveals that g⊥˃ g ∥ and A ∥ ˃A ⊥ , the values allows to assume that Cu +2 is a compressed tetrahedral coordinated configuration since g⊥˃g ∥ [3,25].In such a case one should expect admixing of 4P states with 3d xy ground states due to compression leading to increase of g⊥ and A ∥ [ 3,25].…”

“…ions in alkaline or alkaline-earth phosphate glasses [3, 17, and 18] [3,[23][24][25]. As a result to this structure it is assumed that there is admixing of 3P states with 4d xy states [3,26].…”

Dielectric properties, conductivity, UV–visible and infrared spectroscopy of PbO P2O5 NaF glasses containing WO3

“…The IR spectra for the sample free of WO 3 exhibit vibrational bands around 1275, 1056, 922, 755, 682 and 525 cm − 1 . The vibrational band at 1275 cm − 1 was identified due to P_O stretching vibration; the band at 1056 cm − 1 due to a normal vibrational mode in PO 4 3 − group arising out of symmetric stretching; and the band at 922 cm − 1 due to P\O\P asymmetric bending vibrations. The two bands around 682 and 755 cm − 1 are due to the asymmetric vibration of P\O\P asymmetric linkages [16].…”

“…Fluorophosphate glasses are of particular interest for optical applications since they combine physical properties of both fluoride and phosphate compounds. For that reason, fluorophosphate glasses were pointed as potential materials for laser hosts, non-linear optical or photochromic devices [1][2][3][4][5]. Mixed electronic and ionic, pure electronic or pure ionic conduction is expected in these glasses depending on the composition of the glass constituents.…”