Abstract
Results of nuclear magnetic resonance (NMR) measurements on hexagonal close-packed Rumetal are presented. The field spectra of both isotopes, having a nuclear spinI of 5/2, show a shape characteristic for quadrupolar disturbed NMR. From a simulation of these spectra, the electric field gradientVzz has been determined to be (37±0.5)×10−13 esu/cm3 in agreement with recent band structure calculations. The Knight shift tensor elements deduced from the spectra areKx=Ky=0.46±0.02% andKz=0.56±0.02%. These rather high and positive shifts are completely in line with that of the neighboring elements in the periodic system and have primarily to be ascribed to the Van Vleck contribution. This part of the Knight shift is also responsible for the rather strong anisotropy, that has been found.
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