Structural study of xK2O·(100 − x)[P2O5·CaO] glass system

Spectroscopic investigation of P2O5–CdO–Li2O glass system

“…In agreement with literature data [25,33], the IR and Raman spectra of Li 2 O-P 2 O 5 , CdO-P 2 O 5 and Li 2 O-P 2 O 5 -CdO glasses are dominated by the bands characteristic of different P\O type bonds.…”

“…The weak shoulder from 1324 cm −1 well evidenced at high CdO content may be due to a P-O − bond stretching vibrations combined with a lattice mode [25].…”

“…All spectra show a very weak band at 1640 cm −1 attributed to the bending vibrations of the free H 2 O molecules [25].…”

Characterization and potential applications of new boron-phosphate glass in the CaO-P2O5-K2O-B2O3 system

“…The band at 1039 cm -1 can be assigned to P-O mode vibrations of terminal phosphate groups (Q 1 ) in glasses containing B 2 O 3 and P 2 O 5 as network formers [17]. The peak at 912 cm -1 was associated with δ as (P-O-P) vibrations in K 2 O-CaO-P 2 O 5 glasses [14] and the band at 753 cm -1 could be linked to ν s (P-O-P) vibration of the Q 2 units in boron-phosphate glasses [18,19]. Finally, the peak at 540 cm -1 could be assigned to δ(P-O-P) vibration modes on phosphate [20] and boron-phosphate [19] glasses with a slight shift in the wavenumber due to the presence of K 2 O and CaO as modifiers.…”

Glass formation and properties of sodium zinc phosphate glasses doped with ferric oxide

“…Figure 6 shows the FT-IR spectra for glasses samples between 400 and 2000 cm −1 . The bands at about 1112 and 1000 cm −1 are assigned to asymmetric stretching vibration mode of (PO 3 ) 2− and (PO 4 ) 3− , respectively [22]. The band observed at about 919 cm −1 is correlated to asymmetric modes of P–O–P bonds.…”