IJSRP, Volume 4, Issue 6, June 2014 Edition [ISSN 2250-3153]
Neenu Mary Thomas, Haisal Mathew, Sini Sebastian, 2B. Syamala Kumari, 3Vinoy Thomas, P. I. Paulose & Ancy Manuel
The paper deals with the spectroscopic studies of sol-gel systems doped with rare-earth ions and co-doped with chromium. Doped samples of Nd3+: Cr3+ silica zero gels and silica glasses were prepared from hydrolysis and poly-condensation of precursor solution Tetra Ethyl Ortho Silicate (TEOS), which allows incorporation of specifications by sol-gel method. The xero gels were characterized by XRD, TGA, FTIR & UV/VIS absorption spectra. The intensity and the behavior of the radiation-induced bands are seen to depend on the type of the 3d- transition metal in presence of Neodymium. The host silicate glass shows the stabilizing effect due to increase of more color centers on Gamma Radiation. Reduction in spectroscopic parameters (Racaah and naphelauxetic ratio) confirmed the increase in covalent character of the transition metal ion in the silica matrix due to irradiation.
Neenu Mary Thomas, Haisal Mathew, Sini Sebastian, 2B. Syamala Kumari, 3Vinoy Thomas, P. I. Paulose & Ancy Manuel (2018); Effect of Gamma Radiation on the Structure of Neodymium: Chromium Doped Silicate Glasses;
Int J Sci Res Publ 4(6) (ISSN: 2250-3153). http://www.ijsrp.org/research-paper-0614.php?rp=P302804