Abstract
Physical characteristics, vibrational modes, optical characteristics of new glasses of 64.9B
2
O
3
–10ZnO–25NaF–0.1CoO–xY
2
O
3
:
x
= 0.0 (Y0.0) ≤ x ≤ 1.0 (Y1.0) mol% have been examined. Amorphously grade of the proposed glass systems examined via the quantifying of XRD. Samples density (ρ) enhanced from 2.9452 ± 0.0001 g.cm
−3
to 3.0156 ± 0.0001 g.cm
−3
and the molar volume (V
m
) varied between 21.6957 ± 0.0001 cm
3
.mol
−1
and 21.9364 ± 0.0001 cm
3
.mol
−1
as an increase of Y
+3
ions molar fraction from 0.0 to 1.0 mol% in the glass network. The slope of density and molar volume was 0.07043 and 0.24201, respectively as the Y
3+
ions in the glass structure.The oxygen molar volume (OMV) decreased from 10.583 cm
3
.mol
−1
at [Y
2
O
3
] = 0 mol% to 10.546 at [Y
2
O
3
] = 1.0 mol%, following a linear functional behavior. Also, the oxygen packing density (OPD) increased from 94.493 g.atom.l
−1
to 94.819 g.atom.l
−1
, corresponding to a fractional change of 0.345%. The FTIR spectroscopy approved that the Y
+3
ions caused partially backed alteration between [BO
4
] and [BO
3
] units. The Vis- range consist of three smaller bands related
4
T
1g
(F) →
2
T
1g
(H) octa-,
4
A
2
(
4
F) →
4
T
1
(
4
P) tetrahedral transitions of Co
2+
cations, while
5
T
2g
→
5
E
g
octahedral-transitions of Co
3+
cations. The estimated values of energy gap (E
g
) were 2.93 (± 0.01 eV), 3.10 (± 0.01 eV), 3.12 (± 0.01 eV), 3.13 (± 0.01 eV), and 3.16 (± 0.01 eV) for the 0, 0.2, 0.4, 0.8, and 1.0 mol% of Y
2
O
3
doped glasses, respectively. There was a minor reduce trend of nonlinear refractive index (n
2
) between 5.81 × 10
–11
(esu) and 4.79 × 10
–11
(esu) at 0 and 1 mol% of Y
2
O
3
. Results showed that the suggested glasses could be promising for various optical applications.