New multicomponent fluoride glasses

✍ Scribed by E. Fogret; C. Charron; G. Fonteneau; H. L'Helgoualch; J. Lucas

• Book ID: 104737768
• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 482 KB
• Volume: 31
• Category: Article
• ISSN: 0022-2461
• DOI: 10.1007/bf00356012

✦ Synopsis

New glass compositions have been investigated in the barium-, indium-and gallium-based glass system (BIG). Radioactive thorium has been completely removed and replaced by gadolinium, and these new glasses have been stabilized by substituting barium by alkali ions. Characteristic temperatures Tg, Tx and T~, and the Hruby factor, Hr, have been determined for each glass. The most significant critical cooling rates, Rc, are also given: both the highest Hr and the lowest Rc values for BIG thorium-free glasses were obtained by coupling two alkali ions. Some attempts have also been made to replace thorium by cerium (IV), leading to cerium(lll)-containing glasses. The synthesis of cerium(IV)-containing fluoride glasses seemed to be impossible. Nevertheless, CeF4 has been synthesized, the knowledge of its lattice parameters being improved.