STUDIES OF 29Si SPIN-LATTICE RELAXATION TIMES AND PARAMAGNETIC IMPURITIES IN CLAY MINERALS BY MAGIC-ANGLE SPINNING 29Si-NMR AND EPR
- 5 August 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 12 (8), 1293-1296
- https://doi.org/10.1246/cl.1983.1293
Abstract
High-resolution solid state 29Si-NMR spectra and EPR spectra have been examined on twelve natural philosilicates. It has been found that presence of paramagnetic impurities is markedly effective in shortening the 29Si spin-lattice relaxation times (10 to 1000 ms), and in broadening the linewidths and is favorable for the use of solid state high-resolution 29Si NMR as a tool for structural studies of inorganic materials.Keywords
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