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Structural study of a lead–barium–aluminum phosphate glass by MAS-NMR spectroscopy

✍ Scribed by Guo Gongyi

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
70 KB
Volume
13
Category
Article
ISSN
0926-2040

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✦ Synopsis

The 31 P-and 27 Al-MAS-NMR spectra of a lead-barium-aluminum phosphate glass were measured and analyzed, and the short range structure of the glass are discussed. The 31 P-MAS-NMR spectrum of the glass studied has a single isotropic peak at y4.76 ppm, indicating that orthophosphate species are the dominant P-sites in the glass. The 27 Al-MAS-NMR spectrum of the glass shows that the aluminum ions present in the glass are in 4-, 5-, and 6-fold coordination with oxygen, and that the Ž . Al OP is the dominant moiety for the glass, suggesting the formation of orthophosphate species in the glass.

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