Physics Research International / 2014 / Article / Tab 3

Research Article

Synthesis, Structural and Optical Investigations of (Pb, Bi)TiO3 Borosilicate Glasses

Table 3

Assignment of infrared and Raman bands in the spectra of different glass samples.

Wavenumber (cm−1)IR assignmentsRaman assignments
IRRaman

418–437400–900Vibrations of metal cations such as Pb2+ ions and doubly degenerate stretching vibration of BiO3 groupsMetaborate groups and symmetric breathing vibrations of six-member rings with one or two BO3 triangles replaced by BO4 tetrahedra
612–656Combined vibrations of BO4 and PbO4 groups
750–756700–725Bonding of B–O–B linkages (diborate linkage)Symmetric breathing vibrations of BO3 triangles replaced by BO4 tetrahedra
1035820–850Stretching vibration of B–O–Si linkageSymmetric breathing vibrations of six-member rings with one or two BO3 triangles replaced by BO4 tetrahedra
987Stretching vibrations of B–O–Bi linkage
1106–1121Stretching vibration of BO4 tetrahedra groups
1200–1635Asymmetric stretching relaxation of the B–O bond of trigonal BO3 units
2265–2343–OH bonding
2700–30002656–2694Hydrogen bondingHydrogen and –OH bonding
3325–3400Hydroxyl or water groups
and O–H stretching vibrations