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Crystallization study of heavy metal fluoride glasses ZBLAN by Raman spectroscopy

✍ Scribed by L. Qin; Z. X. Shen; B. L. Low; H. K. Lee; T. J. Lu; Y. S. Dai; S. H. Tang; M. H. Kuok

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 375 KB
Volume: 28
Category: Article
ISSN: 0377-0486
DOI: 10.1002/(sici)1097-4555(199707)28:7<495::aid-jrs116>3.0.co;2-x

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✦ Synopsis

Heavy metal Ñuoride glass ZBLAN, with molar composition ZrF 4 (53)-BaF 2 (20)-LaF 3 (4)-AlF 3 (3)-NaF(20), was studied in vacuum at high temperatures up to 480 ÄC by Raman spectroscopy. The vitreous glass was found to crystallize at 330 ÄC, most probably to crystallites. High-temperature experiments in air were also b-BaZrF 6 carried out and was formed at the surface of the sample. Doping by increases the crystallization ZrO 2 SiO 2 temperature by 25 ÄC for experiments performed in air, while dopants are found to react with the host. PbO 2

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