Vol. 1, Issue 11, Part J (2015)

Abstract
All glasses found to share two common characteristics. No glass has a long range, periodic atomic arrangement. Crystalline nature of CFLBB1, CFLBB2 and CFLBB3 is due to presence of iron ions. Diffraction peaks originate from Fe3O4 at 2θ =35.915 35.394, 35.366 are observed in the XRD pattern. Fe4+ serves as a network modifier and Fe2O3 dominates over CoO in the present compositions. It is observed that intensity of all peaks, especially corresponding to (311) increases as the concentration of iron increases.