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Tellurite And Fluorotellurite Glasses For Active And Passive

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5. Crystallisation studies; MDO 142<br />

Table (5.2): Ten most intense peaks with corresponding 2θ (observed and theoretical) and<br />

Miller indices for 99.9995% ZnO powder, sourced from Alfa Aesar.<br />

Observed<br />

2θθθθ / °<br />

Observed<br />

intensity / %<br />

Theoretical<br />

2θθθθ / °<br />

Theoretical<br />

intensity / %<br />

hkl<br />

JCPDS<br />

Card<br />

31.92226 55.6 31.78322 57 100 36-1451<br />

34.56988 40.0 34.43117 44 002 "<br />

36.39434 100.0 36.25840 100 101 "<br />

47.62511 19.3 47.48672 23 102 "<br />

56.55821 30.2 56.43483 32 110 "<br />

62.66531 25.7 62.55672 29 103 "<br />

67.58624 21.3 67.49327 23 112 "<br />

67.77897 11.8 - - - -<br />

68.67315 10.8 68.58710 11 201 36-1451<br />

92.76702 6.6 92.69898 6 211 "<br />

Fig (5.5) shows an XRD trace of the 99.997% Na2CO3 powder sourced from Alfa Aesar.<br />

Lin (Counts)<br />

1800<br />

1700<br />

1600<br />

1500<br />

1400<br />

1300<br />

1200<br />

1100<br />

1000<br />

900<br />

800<br />

700<br />

600<br />

500<br />

400<br />

300<br />

200<br />

100<br />

0<br />

d=3.40996<br />

d=3.22293<br />

d=2.95961<br />

d=2.70323<br />

d=2.59761 d=2.58565<br />

d=2.54108<br />

d=2.36326<br />

d=2.25293<br />

10 20 30 40 50 60 70<br />

2-Theta - Scale<br />

Na2CO3 Powder - File: Na2co326.RAW - Type: 2Th/Th locked - Start: 10.000 ° - End: 100.000 ° - Step: 0.020 ° - Step time: 2. s - Temp.: 25 °C (Room) - Time Started: 0 s - 2-Theta: 10.000 ° - Theta: 5.000 °<br />

Operations: Import<br />

77-2082 (C) - Sodium Carbonate - Na2CO3 - Y: 50.00 % - d x by: 1. - WL: 1.5406 - Monoclinic - a 8.90400 - b 5.23900 - c 6.04200 - alpha 90.000 - beta 101.350 - gamma 90.000 - Base-centred - C2/m (12) -<br />

Fig. (5.5): XRD trace of 99.997% Na2CO3 powder, sourced from Alfa Aesar (⎯ JCPDS<br />

card number 77-2082: Na2CO3, monoclinic, C2/m).<br />

d=2.19110<br />

d=2.17020<br />

d=2.03217<br />

d=1.95047<br />

d=1.88232<br />

d=1.84361<br />

d=1.70887<br />

d=1.67831<br />

d=1.48158<br />

d=1.38679

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