OPTICAL AND SPECTROSCOPIC STUDIES OF Fe2O3-Bi2O3-B2O3:V2O5 GLASSES

被引：0
|
作者：
Sanjay [1 ]
Kishore, N. [2 ]
Agarwal, A. [2 ]
Dahiya, S. [3 ]
Pal, Inder [2 ]
Kumar, Navin [1 ]
机构：
[1] Rawal Inst Engn & Technol, Faridabad 121006, Haryana, India
[2] Guru Jambheshwar Univ Sci & Technol, Dept Appl Phys, Hisar, Haryana, India
[3] Maharshi Dayanand Univ, Dept Phys, Rohtak 124001, Haryana, India
来源：
MODERN PHYSICS LETTERS B | 2013年 / 27卷 / 28期
关键词：
Oxide glass; optical band gap; FTIR spectra; SODIUM-BORATE GLASSES; PHOSPHATE-GLASSES; SPECTRA; OXIDE; RAMAN; IR;
D O I：
10.1142/S0217984913502072
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The glasses of compositions xFe(2)O(3) center dot (40 - x)Bi2O3 center dot 60B(2)O(3) center dot 2V(2)O(5) have been prepared by the standard melt-quenching technique. Amorphous nature of these samples is ascertained by XRD patterns. The presence of BO3 and BO4 units is identified by IR spectra of glass samples. The absorption edge (gimel(cut-off)) shifts toward longer wavelengths with an increase in Fe2O3 content in the glass matrix. The values of optical band gap energy for indirect allowed and forbidden transitions have been determined and it is found to decrease with increase in transition metal ions. The Urbach's energy is used to characterize the degree of disorder in amorphous solids.
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页数：10
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