Tellurite And Fluorotellurite Glasses For Active And Passive

Percentage (%)
70
60
50
40
30
20
10
0
6. Optical properties; MDO 201
Table (6.5): Percentage of OH groups for glasses MOD014 (90TeO2-5WO3-5Nb2O5 mol.
%), MOD015 (82.5TeO2-7.5WO3-10Nb2O5 mol. %), and MOD016 (70TeO2-25WO3-
5Bi2O3 mol. %).
Glass MOD Strong Weak Free
ID OH / % OH / % OH / %
014 64 24 12
015 60 30 11
016 57 34 10
Strong OH Weak OH Free OH
OH type
MOD014 (5 mol. % WO3) MOD015 (7.5 mol. % WO3) MOD016 (25 mol. % WO3)
Fig. (6.25): Percentage of OH groups for glasses MOD014 (90TeO2-5WO3-5Nb2O5 mol.
%), MOD015 (82.5TeO2-7.5WO3-10Nb2O5 mol. %), and MOD016 (70TeO2-25WO3-
5Bi2O3 mol. %).
From table (6.5) and fig. (6.25), it can be seen that the amount of strong and free OH
tended to fall with increasing WO3 content. However, the weakly H-bonded OH did not
follow this trend, and increased with WO3. These variations may however be smaller than
the error introduced from Gaussian fitting the bands.