Tellurite And Fluorotellurite Glasses For Active And Passive

% OH
90
80
70
60
50
40
30
20
10
6. Optical properties; MDO 209
y = -0.73635x + 84.74304
y = 0.73635x + 15.25696
0 5 10 15 20 25 30 35
x ZnF2 / mol. %
Fig. (6.35): Percentage of weakly H-bonded OH and free OH groups for glasses of the
series (90-x)TeO2-10Na2O-xZnF2, mol. %, for 5 ≤ x ≤ 30 mol. % (MOF001, 004 to 008).
It can be seen there was a general decrease in weak and an increase in free OH with
increasing ZnF2 content.
Infrared spectroscopy of series 65 mol. %, for 5 ≤ x ≤ 30 mol. %
Fig. (6.36) shows the infrared spectra of glasses MOF009 to 013 which were part of the
series 65TeO2-(25-x)ZnF2-xZnO-10Na2O mol. %, for 5 ≤ x ≤ 25 mol. %. The y-axis was
splayed for display purposes, hence numbers on the y-axis refer only to the spectrum of
the x = 5 glass, but the divisions on the y-axis apply to all.
Weak OH
Free OH