NMR studies of bond arrangements in alkali phosphate glasses

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Description

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 {sup 31}P 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 Q{sup n} notation, where n = 0, 1, 2, 3 and represents the number of bridging oxygens attached to the phosphate. Using {sup 31}P MAS NMR different phosphate environments are readily identified and quantified. In this paper, the authors present a brief description of recent ... continued below

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8 p.

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Alam, T.M. & Brow, R.K. January 1, 1998.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

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 {sup 31}P 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 Q{sup n} notation, where n = 0, 1, 2, 3 and represents the number of bridging oxygens attached to the phosphate. Using {sup 31}P MAS NMR different phosphate environments are readily identified and quantified. In this paper, the authors present a brief description of recent one dimensional (1D) {sup 6}Li, {sup 7}Li and {sup 31}P MAS experiments along with two-dimensional (2D) {sup 31}P exchange NMR experiments for a series of lithium ultraphosphate glasses. From the 2D exchange experiments the connectivities between different Q{sup n} 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 Li{sub 2}O concentration.

Physical Description

8 p.

Notes

OSTI as DE98004949

Source

  • 18. international congress on glass, San Francisco, CA (United States), 5-10 Jul 1998

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  • Other: DE98004949
  • Report No.: SAND--98-0172C
  • Report No.: CONF-980712--
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/654009 | External Link
  • Office of Scientific & Technical Information Report Number: 654009
  • Archival Resource Key: ark:/67531/metadc703399

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  • January 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 14, 2016, 7:56 p.m.

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Alam, T.M. & Brow, R.K. NMR studies of bond arrangements in alkali phosphate glasses, report, January 1, 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc703399/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.