NMR studies of bond arrangements in alkali phosphate glasses [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1998.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 8 pages : digital, PDF file
- Additional Creators:
- Sandia National Laboratories, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Solid-state magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy has become a powerful tool for the investigation of local structure and medium range order in glasses. Previous ³¹P MAS NMR studies have detailed the local structure for a series of phosphate glasses. Phosphate tetrahedra within the glass network are commonly described using the Qⁿ notation, where n = 0, 1, 2, 3 and represents the number of bridging oxygens attached to the phosphate. Using ³¹P MAS NMR different phosphate environments are readily identified and quantified. In this paper, the authors present a brief description of recent one dimensional (1D) ⁶Li, ⁷Li and ³¹P MAS experiments along with two-dimensional (2D) ³¹P exchange NMR experiments for a series of lithium ultraphosphate glasses. From the 2D exchange experiments the connectivities between different Qⁿ phosphate tetrahedra were directly measured, while the 1D experiments provided a measure of the P-O-P bond angle distribution and lithium coordination number as a function of Li₂O concentration.
- Report Numbers:
- E 1.99:sand--98-0172c
E 1.99: conf-980712--
- Other Subject(s):
- Published through SciTech Connect.
18. international congress on glass, San Francisco, CA (United States), 5-10 Jul 1998.
Brow, R.K.; Alam, T.M.
- Funding Information:
View MARC record | catkey: 14450409