15 T, 4.2 K field-swept 27Al NMR spectroscopy
A field-swept NMR spectrometer has been constructed based on a 16 T (4.2 K operation) superconducting magnet, the largest magnetic field yet used for field-swept NMR. We find that the experiment is relatively easy to perform for 27Al NMR and the spectra for α-Al2O3 are of high quality. There are two important advantages that we discuss herein: (1) resonances with exceedingly wide line widths can be studied and (2) operation at 4.2 K largely eliminates proton hopping and the resulting motional averaging of the electric field gradient at the aluminum sites. © 1994.
Publication Source (Journal or Book title)
Chemical Physics Letters
Wu, X., Juban, E., & Butler, L. (1994). 15 T, 4.2 K field-swept 27Al NMR spectroscopy. Chemical Physics Letters, 221 (1-2), 65-67. https://doi.org/10.1016/0009-2614(94)87017-9