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Tellurite And Fluorotellurite Glasses For Active And Passive

Tellurite And Fluorotellurite Glasses For Active And Passive

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4. Thermal properties and glass stability; MDO 110<br />

Effect of Er +3 doping<br />

Fig. (4.19) shows DTA traces of glasses MOF015 to MOF018. The ratio of TeO2:ZnF2:<br />

Na2O were kept at 70:20:10 for this compositional series MOF015 (69.3TeO2-9.9Na2O-<br />

19.8ZnF2-1Er2O3 mol. %), MOF016 (69.93TeO2-9.99Na2O-19.98ZnF2-0.1Er2O3 mol.<br />

%), MOF017 (69.86TeO2-9.98Na2O-19.96ZnF2-0.2ErF3 mol. %) and MOF018<br />

(69.98TeO2-10Na2O-20ZnF2-0.02ErF3 mol. %).<br />

<br />

o C<br />

MOF015 MOF017ii<br />

MOF016 MOF018i<br />

MOF017i MOF018ii<br />

100 200 300 400 500<br />

Temperature / o C<br />

Fig. (4.19): DTA traces for glasses MOF015 (69.3TeO2-9.9Na2O-19.8ZnF2-1Er2O3 mol.<br />

%), MOF016 (69.93TeO2-9.99Na2O-19.98ZnF2-0.1Er2O3 mol. %), MOF017 (69.86TeO2-<br />

9.98Na2O-19.96ZnF2-0.2ErF3 mol. %) and MOF018 (69.98TeO2-10Na2O-20ZnF2-<br />

0.02ErF3 mol. %).

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