This paper treaty with the preparation, characterization, and Optical and Dielectric studies of xCdI₂–(100 − x)[0.444 Ag₂SO₄–0.555 (0.4TeO₂–0.6B₂O₃) glass system, where x is the wt% of CdI₂ varying from 0 to 25 with step 5. These systems were prepared by melt quenching method and characterized by Differential scanning calorimeter (DSC), X-ray diffraction (XRD), and Fourier transforms infrared (FTIR) spectra. Physical parameters such as the density of materials, molar volume, average molecular weight, refractive index, oxygen mole present, polarizability, field strength, and Cd and Ag ions concentration were calculated. Based on optical absorption results, direct band gap E_g was premeditated by comparing Tauc’s plots and the ASF method. From these optical absorption results, Urbach energy (E_u) also calculated. Second-order deformation potential and free energy of the system have been resoluted by expending relation between E_u and E_g. Variation of these factors by changing the CdI₂ composition is deliberated in detail. Refractive index, dielectric constant at optical and electrical frequencies have been discussed in detail.

本文对x CdI ₂ –（100-  x）[0.444 Ag ₂ SO ₄ –0.555（0.4TeO ₂ –0.6B ₂ O ₃）玻璃系统的制备，表征以及光学和介电研究进行了研究，其中x是CdI _2的重量％在步骤5中从0到25变化。这些系统是通过熔融淬灭法制备的，并通过差示扫描量热仪（DSC），X射线衍射（XRD）和傅立叶变换红外（FTIR）光谱进行了表征。计算了物理参数，例如材料的密度，摩尔体积，平均分子量，折射率，存在的氧摩尔，极化率，场强以及Cd和Ag离子浓度。根据光吸收结果，通过比较Tauc的图和ASF方法，可以预见直接带隙E _g。从这些光吸收结果，还可以计算出Urbach能量（E _u）。通过扩展E之间的关系来确定系统的二阶变形势和自由能_u和E _g。详细讨论了通过改变CdI ₂组成来改变这些因素。已经详细讨论了折射率，光学和电频率下的介电常数。