Fe_𝟐O_𝟑 Modified Physical, Structural and Optical Properties of Bismuth Silicate Glasses

Table 1

Density (𝑑), molar volume (𝑉_𝑚), glass transition temperature (𝑇_𝑔), optical band gap energy (𝐸_op), and refractive index (𝑛) of 60SiO₂⋅(100−𝑥)Bi₂O₃·𝑥Fe₂O₃ glasses for different values of 𝑥.

Parameters	𝑥=0	𝑥=1	𝑥=3	𝑥=5	𝑥=10	𝑥=15	𝑥=20
𝑑(gm/cm^3) (±0.01 gm/cm^3)	6.22	6.16	6.08	5.97	5.73	5.52	5.26
𝑉𝑚 (cm^3/mole) (±0.01 cm^3/mole)	35.71	35.61	35.04	34.66	33.42	31.92	30.62
𝑇𝑔 (°C) (±1°C)	469	471	476	481	505	510	513
𝐸op (eV) (±0.01 eV)	2.95	2.47	2.22	2.02	—	—	—
𝑛 (±0.01)	2.41	2.55	2.64	2.72	—	—	—