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Abstract  

The relatively poor thermal stability of fluorozirconate glasses is a major factor preventing the realisation of their true potential for fibre optic applications. A range of methods based on both isothermal and non-isothermal DSC techniques, which can be employed to evaluate the thermal stability of fluorozirconate glasses, are described. The relevance of these thermal stability criteria to the design of fluorozirconate compositions capable of yielding high quality optical fibres is discussed.

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Abstract  

New glasses have been synthesized in the system ZrF46BaF26PrF3. Glasses were prepared by conventional fusion method and the vitreous domain was established. For vitreous samples the thermal stability parameters were determined, so that the best compositions could be selected according to a compromise between high glass forming ability and thermal stability vs. crystallization.

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– 1652 . 10.1016/j.jeurceramsoc.2005.03.235 . 19. Matusita , K , Miura , K , Komatsu , K . Kinetics of non-isothermal crystallization of some fluorozirconate glasses . Thermochim

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