Structure and Physical Properties of 59B2O3–10Na2O–(30 − x)CdO–xZnO–1CuO (0 ≤ x ≤ 30) Glass System

L. Ravangave, G. N. Devde
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引用次数: 8

Abstract

A series of stable and transparent glasses with the composition 59B2O3–10Na2O–(30 − x) CdO–xZnO–1CuO (0 ≤ x ≤ 30) (where x = 0, 7.5, 15, 22.5, and 30 mol%) were prepared by conventional melt-quenching technique. These glasses were characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) and Raman spectroscopes, differential scanning calorimetry (DSC), optical absorption, and electron paramagnetic resonance (EPR). XRD and DSC analysis confirmed the glassy nature of the prepared samples. The physical properties such as density (ρ), molar volume (Vm), oxygen packing density (OPD), and the molar volume of oxygen (Vo) were calculated and discussed. FTIR and Raman studies showed that the glass network consists of BO3 and BO4 units in various borate groups. From DSC, it was found that the glass transition temperature (Tg) varies nonlinearly with the addition of ZnO content in place of CdO. Both EPR and optical absorption results have confirmed that the Cu2+ ions are in octahedral coordination with a strong tetrahedral distortion. The changes in various spectroscopic properties of Cu2+ ions in the glasses such as spin-Hamiltonian parameters ( ) and bonding coefficients (α2, β1, and β2) were understood with the help of FTIR and Raman studies.
59B2O3-10Na2O -(30−x) CdO-xZnO-1CuO(0≤x≤30)玻璃体系的结构与物理性能
采用常规熔淬法制备了59B2O3-10Na2O -(30−x) CdO-xZnO-1CuO(0≤x≤30)(其中x = 0、7.5、15、22.5和30 mol%)的稳定透明玻璃。利用x射线衍射(XRD)、傅里叶变换红外(FTIR)和拉曼光谱仪、差示扫描量热法(DSC)、光学吸收和电子顺磁共振(EPR)对这些玻璃进行了表征。XRD和DSC分析证实了所制备样品的玻璃性质。计算并讨论了氧的密度(ρ)、摩尔体积(Vm)、氧堆积密度(OPD)和氧的摩尔体积(Vo)等物理性质。红外光谱(FTIR)和拉曼光谱(Raman)研究表明,玻璃网络由不同硼酸基团中的BO3和BO4单元组成。DSC分析发现,玻璃化转变温度(Tg)随ZnO含量代替CdO的加入呈非线性变化。EPR和光吸收结果均证实了Cu2+离子呈八面体配位,具有较强的四面体畸变。通过FTIR和拉曼光谱研究,了解了Cu2+离子在玻璃中的各种光谱性质的变化,如自旋哈密顿参数()和键合系数(α2、β1和β2)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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