Co-doped yttria borate glasses: investigation of physical, FTIR spectroscopy, optical and radiation interaction characteristics

Cobalt oxide (CoO) doped with yttria zinc borate sodium fluoride glasses with chemical formula 25NaF-10ZnO-0.6Y(2)O(3)-(65-y)B2O3- (y)CoO: 0 (Co-0.0 <= y <= 0.4 (Co-0.4) mol% have been produced using the melt quenching method. Role of CoO mol% on physical, FTIR spectroscopy, linear/nonlinear optical features, and interaction mechanism of charged/uncharged particles with such materials has been investigated. The density was enhanced from 2.9824 (g.cm(-3)) to 3.0014 (g.cm(-3)) as CoO increased from 0.0 to 0.4 mol%. The relative fraction (N4) of BO4 units of the investigated glasses showed that a gradual back transformation from bridging BO4 to non-bridging BO3 by cobalt increasing. The estimated values of indirect optical band gap (E-g) were 2.96 (+/- 0.02), 2.79 (+/- 0.02), 2.82 (+/- 0.02), 3.12 (+/- 0.02) and 3.18 (+/- 0.02) eV for Co-0.0, Co-0.1, Co-0.2, Co-0.3, and Co-0.4 samples, respectively. Linear index of refraction (n(o)) was changed from 2.41 to 2.36. The nonlinear susceptibility (chi((3))) and index of refraction (n(2)) of the investigated glasses have a similar trend. The transmission factor (TF%) was increased as CoO content in the investigated glasses. The effective atomic number (Z(eff)) possessed the following trend: (Z(eff))(gamma) > (Z(eff))(beta) > (Z(eff))(p) > (Z(eff))(alpha).

Automated summary

The effect of cobalt oxide (CoO) on the physical, FTIR spectroscopy, linear and nonlinear optical properties of yttria zinc borate sodium fluoride glasses was studied. The density and relative fraction of BO4 units increased with increasing CoO content. The indirect optical band gap and linear refractive index decreased with increasing CoO content. The nonlinear susceptibility and refractive index showed a similar trend. The transmission factor increased with increasing CoO content. The effective atomic number followed the order: (Z(eff))(gamma)>(Z(eff))(beta)>(Z(eff))(p)>(Z(eff))(alpha).