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The Journal of chemical physics

High resolution 11B NMR of magnesium diboride using cryogenic magic angle spinning.


PMID 22998255

Abstract

Static and magic-angle spinning (11)B nuclear magnetic resonance (NMR) data at 4.7 T and 8.5 T have been obtained under cryogenic conditions on a diluted sample of magnesium diboride powder in the normal and superconducting state. The data provide accurate information on the magnetic shift and longitudinal relaxation time down to a temperature of 8 K, with a resolution improvement over the entire temperature range. The onset of superconductivity is unaffected by the sample rotation, as revealed by a steep variation of the magnetic shift just below the critical temperature.

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553913
Magnesium boride, powder, −100 mesh, ≥99% trace metals basis
B2Mg