To explore the impact of iron oxide (Fe₂O₃) on the structure and optical features of some borate glasses. A glass system with the formulation [(10.5 CaO+ 16.5 Na₂O+ (73-x) B₂O₃+ x Fe₂O₃), where x = 0, 1, 2.5, 5 and 10.5 mol. %] was prepared using the melt-quench technique. The structure of obtained glasses were characterized and the physical parameters such as density, molar volume, atomic packing factor and bond length were calculated. The optical absorption spectra of the glasses were recorded in the wavelength range 190–1100 nm. Absorption bands observed around 450-550 nm in absorption spectra is due to the d-d transition of ⁶A_1g(S) → ⁴T_2g(G) which indicates the presence of iron ion in trivalent state (Fe³⁺) with distorted octahedral symmetry. The amorphous nature was confirmed by comparing the experimental and empirical density values. Moreover, these values of the experimental and empirical density were employed to expect the crystallization that occur at x= 37.2 mol % of Fe₂O₃. The obtained results show a decrement in the chemical bond energy, and bond force constant with Fe₂O₃ increasing. The expermental density and molar volume show an increasing behaviour with Fe₂O₃ increment.

探讨氧化铁（Fe ₂ O ₃）对某些硼酸盐玻璃的结构和光学特性的影响。具有配方[（10.5 CaO + 16.5 Na ₂ O +（73-x）B ₂ O ₃ + x Fe ₂ O ₃），其中x = 0、1、2.5、5和10.5 mol的玻璃系统。使用熔融淬火技术制备[％]。表征得到的玻璃的结构，并计算密度，摩尔体积，原子堆积因子和键长等物理参数。眼镜的光学吸收光谱记录在190-1100 nm的波长范围内。在吸收光谱中在450-550 nm附近观察到的吸收带归因于⁶ A的dd跃迁_1g（S）→  ⁴ T _2g（G）表示八价对称的三价铁离子（Fe ³⁺）的存在。通过比较实验和经验密度值，证实了非晶态性质。此外，使用这些实验和经验密度的值来预期在x ＝ 37.2mol％的Fe ₂ O ₃处发生的结晶。得到的结果表明化学键能下降，并且键力常数随Fe ₂ O _3的增加而增加。实验密度和摩尔体积随Fe ₂ O _3的增加而增加。