Tellurite And Fluorotellurite Glasses For Active And Passive

7. Surface properties; MDO 279
Fig. (7.11) shows a wide scan XPS spectrum of a cleaved surface of glass MOF001_iii
(65TeO2-10Na2O-25ZnF2 mol. %), which was melted for 1.75 hours, with un-fluorinated
ZnF2 (see chapter 3 for further details).
CPS
80
70
60
50
40
30
20
10
x 10 4
Na 1s
CasaXPS
Zn 2p1/2
Zn 2p3/2
Name
Na 1s
Zn 2p
O 1s
F 1s
T e 3d
Zn 2p
Te 3s
Te MNN
O KLL
Pos.
1071.00
1021.50
530.50
684.00
576.50
FW HM
2.991
3.262
2.892
3.210
2.891
Area
10671.7
24211.0
33052.0
7565.9
112571.4
Te 3p1/2
At%
6.675
4.496
60.120
9.102
19.606
Te 3p3/2
1000 900 800 700 600
Binding Energy (eV)
Fig. (7.11): Wide scan XPS spectrum of cleaved surface of glass MOF001_iii (65TeO2-
10Na2O-25ZnF2 mol. %).
Fig. (7.12) shows the high resolution XPS scan of the F1s peak, which was asymmetic,
from a cleaved surface of glass MOF001_iii (65TeO2-10Na2O-25ZnF2 mol. %), melted
for 1.75 hours. The O1s peak was also asymmetric as shown in fig. (7.13).
F 1s
Te 3d5/2
Te 3d3/2
Te 3d
O 1s