DSC, ESR and optical absorption studies of Cu2+ ion doped in boro cadmium tellurite glasses

作者：Pavani P Gayathri^*; Prasad M; Mouli V Chandra

来源：Journal of Alloys and Compounds, 2012, 527: 5-9.

DOI：10.1016/j.jallcom.2012.02.142

• Amorphous materials
• Differential scanning calorimetry (DSC)
• Glass transitions
• Electron resonance

Physical, optical absorption, ESR and DSC studies on 50 B2O3-(50 - x) CdO-xTeO(2) glasses containing Cu2+ spin probe have been carried out. Density measurement is carried out by Archimedes principle. Variation in glass transition temperature is discussed in terms of physical parameters. ESR results show that g(parallel to) > g(perpendicular to) indicating that the Cu2+ ions is in tetragonal distorted octahedral site and its ground state is d(x2-y2). There are considerable changes in g(parallel to), g(vertical bar) and A(parallel to) values with increasing the concentration of CdO in BCT glass systems. The optical absorption spectra results show that the absorption peak of Cu2+ is a function of composition. The observed optical absorption peak of Cu2+ has been found to be minimum at 776 nm for x = 30 mol.% of CdO content. The variations in the physical, optical and bonding parameters clearly indicate the structural changes in the present glass system with varied CdO content.

• 出版日期2012-6-25