Spectroscopic studies of copper doped alkaline earth lead zinc phosphate glasses

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• 作者：S. Sreehari Sastry ; B. Rupa Venkateswara Rao
• 关键词：Phosphate glasses ; Transition metal ; Electron paramagnetic resonance ; Infrared spectroscopy ; Raman spectroscopy
• 刊名：Physica B
• 出版年：1 February, 2014
• 年：2014
• 卷：434
• 期：Complete
• 页码：159-164
• 全文大小：576 K

文摘

In this paper spectroscopic investigation of Cu²⁺ doped alkaline earth lead zinc phosphate glasses was done through the spectroscopic techniques like X-ray diffraction, Ultra Violet (UV) absorption Spectroscopy, Electron Paramagnetic Resonance (EPR - X band), Fourier Transform Infra Red (FTIR) and Raman Spectroscopy. Alkaline earth lead zinc phosphate glasses containing 0.1% copper oxide (CuO) were prepared by the melt quenching technique. Spectroscopic studies indicated that there is a greater possibility for the copper ions to exist in Cu²⁺ state in these glasses. The optical absorption spectra indicated that the absorption peak of Cu²⁺ is a function of composition. The maxima absorption peak was reported at 862 nm for strontium lead zinc phosphate glass. Bonding parameters were calculated for the optical and EPR data. All these spectral results indicated clearly that there are certain structural changes in the present glass system with different alkaline earth contents. The IR and Raman spectra noticed the breaking of the P-O-P bonds and creating more number of new P-O-Cu bonds.