XPS Studies of Fluorine Bonding in Phosphate Glasses

✍ Scribed by Brow, R. K.; Osborne, Z. A.

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 370 KB
• Volume: 24
• Category: Article
• ISSN: 0142-2421
• DOI: 10.1002/(sici)1096-9918(199602)24:2<91::aid-sia70>3.0.co;2-f

✦ Synopsis

The F 1s spectra from fluorine-containing phosphate glasses provide quantitative information about the nature of fluorine bonding that can be used to test structure+omposition models. When fluorine is added to an aluminophosphate base glass, AI-F bonds are initially preferred until all available Al sites are filled, after which additional F replaces P-0-P bonds to form P-F sites. In tin phosphate base glasses, the P-0-P bonds are consumed during the initial stages of thoridation, followed then by the formation of So-F bonds. The structural insight provided by XPS is complementary to that provided by more conventional 'bulk' spectroscopic probes.