Narayanan, M.K.Shashikala, H.D.2026-02-062018AIP Conference Proceedings, 2018, Vol.1953, , p. -0094243Xhttps://doi.org/10.1063/1.5032910https://idr.nitk.ac.in/handle/123456789/31487Glasses with composition (50-X)BaO-X(YF<inf>2</inf>)-50P<inf>2</inf>O<inf>5</inf> (Y - Ca, Ba, X = 0, 10, 20 mol%) were prepared using conventional melt-quenching technique. Optical parameters of prepared samples such as optical band gap energy increased, while Urbach energy and refractive index decreased with partial substitution of BaO with CaF<inf>2</inf> or BaF<inf>2</inf> in the glass batch. © 2018 Author(s).