Solid-solid phase transitions for temperature calibration in magic-angle spinning
β Scribed by James F Haw; Russell A Crook; Richard C Crosby
- Publisher
- Elsevier Science
- Year
- 1986
- Weight
- 209 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0022-2364
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π SIMILAR VOLUMES
The phase transitions within the three phases of potassium nitrate ( -, -, and -KNO 3 ) have been investigated in detail by variable-temperature (VT) 15 N magic-angle spinning (MAS) NMR spectroscopy employing 98% 15 N-enriched KNO 3 . The stability of the metastable -KNO 3 phase is found to be highl
Magnetic field gradients have proven useful in NMR for coherence pathway selection, diffusion studies, and imaging. Recently they have been combined with magic angle spinning to permit high-resolution measurements of semi-solids, where magic angle spinning averages any residual dipolar couplings and