Linear Optical Properties of Zinc Borotellurite Glass Doped with Lanthanum Oxide Nanoparticles for Optoelectronic and Photonic Application

Table 1

Assignment of infrared transmission bands of {[(TeO₂)_0.7(B₂O₃)_0.3]_0.7(ZnO)_0.30.3}_1−x (La₂O₃ NPs)_x with different molar fraction of La₂O₃ NPs.

Number	0.01	0.02	0.03	0.04	0.05	Assignments
1	1230	1233	1235	1235	1236	Asymmetric stretching relaxation of the B-O band of trigonal BO3 units [27].
2	—	—	—	993	996	B-O bond stretching of the tetrahedral BO4 units [24].
3	638	642	640	644	642	TeO4 group exists in all tellurite containing glasses [25].
4	—	—	—	—	—	ZnO participates in the glass network with ZnO4 structural units and alternate TeO4 [15].
5	—	—	—	—	—	Vibration of La-O bond [28].