15 T, 4.2 K field-swept 27Al NMR spectroscopy

✍ Scribed by Xiao Wu; Eric A. Juban; Leslie G. Butler

• Book ID: 103036011
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 258 KB
• Volume: 221
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)87017-9

✦ Synopsis

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 *'Al NMR and the spectra of a-A1,09 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.