论文信息 - Physical and optical absorption studies of Fe3+ - ions doped lithium borate glasses containing certain alkaline earths

Physical and optical absorption studies of Fe3+ - ions doped lithium borate glasses containing certain alkaline earths

Iron ion doped lithium borate glasses with the composition 15RO-25Li2O-59B2O3-1Fe2O3 (where R= Ca, Sr and Ba) have been prepared by the conventional melt quenching technique and characterized to investigate the physical and optical properties using XRD, density, molar volume and UV-Visible spectroscopy. The optical absorption spectra exhibit a band at around 460 nm which is assigned to 6A1g(S) → 4Eg (G) of Fe3+ ions with distorted octahedral symmetry. From ultraviolet absorption edges, the optical band gap and Urbach energies have been evaluated. The effect of alkaline earths on these properties is discussed.

P. Kistaiah | Ashok Bhogi | R. Kumar

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