Effects of Bi2O3 on optical Absorption , Ligand Field Parameters and structural Properties of Co2+ ion-doped lithium borate and lithium borosiicate glass systems
Mohammed, A., Neseem, S., Farouk, M., Mabhan, E. (2024). Effects of Bi2O3 on optical Absorption , Ligand Field Parameters and structural Properties of Co2+ ion-doped lithium borate and lithium borosiicate glass systems. EKB Journal Management System, 3(2), 430-441. doi: 10.21608/ijtar.2024.340662.1096
Alshaymaa Ramadan Mohammed; Shadia Neseem; M Farouk; Eman Mabhan. "Effects of Bi2O3 on optical Absorption , Ligand Field Parameters and structural Properties of Co2+ ion-doped lithium borate and lithium borosiicate glass systems". EKB Journal Management System, 3, 2, 2024, 430-441. doi: 10.21608/ijtar.2024.340662.1096
Mohammed, A., Neseem, S., Farouk, M., Mabhan, E. (2024). 'Effects of Bi2O3 on optical Absorption , Ligand Field Parameters and structural Properties of Co2+ ion-doped lithium borate and lithium borosiicate glass systems', EKB Journal Management System, 3(2), pp. 430-441. doi: 10.21608/ijtar.2024.340662.1096
Mohammed, A., Neseem, S., Farouk, M., Mabhan, E. Effects of Bi2O3 on optical Absorption , Ligand Field Parameters and structural Properties of Co2+ ion-doped lithium borate and lithium borosiicate glass systems. EKB Journal Management System, 2024; 3(2): 430-441. doi: 10.21608/ijtar.2024.340662.1096

Effects of Bi2O3 on optical Absorption , Ligand Field Parameters and structural Properties of Co2+ ion-doped lithium borate and lithium borosiicate glass systems

International Journal of Theoretical and Applied Research
Volume 3, Issue 2, December 2024, Page 430-441  XML PDF (779.2 K)
Document Type: Original Article
DOI: 10.21608/ijtar.2024.340662.1096
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Authors
Alshaymaa Ramadan Mohammed email 1; Shadia Neseem1; M Farouk2; Eman Mabhan1
1Physics Department, Faculty of Science, girls' branch, Al-azhar University, cairo, Egypt.
2Physics Department, Faculty of Science, Boys' branch, Al-azhar University, cairo, Egypt.
Abstract
In the present study, the impact of bismuth cations on the constructional and optical characters of borate and borosilicate glasses containing Co (hybrid shaped glasses) was studied. Various glass specimens which have divergent quantites of Bi2O3 and a fixed quantity of CoO had been synthesized using a melt-quenching method. The physical properties of the synthesized compositions were examined in terms of density (p) and molar volume (Vm). The structural properties were investigated using infrared analysis and optical properties absorption spectroscopy. FT-IR studies revealed that Bi+3 ions cause structural rearrangements by converting tetra-coordinated boron into tri-coordinate boron, thereby increasing the number of non-bridging oxygen atoms (NBO). The observed decrease in the optical band gap energy is attributed to the increase in NBO which , in return has a noticeable deficiency in the optical band gap energy. The optical band gap energy was reduced; on the other hand the urabch energy grew up highlighting the significance of Bi2O3 in modifying the band gap and its localized states. The light absorption transitions of Co2+ ions were investigated using ligand field theory.
Keywords
(NBO); Urbach energy; Ligand field theory; FT-IR
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