Knight shift and electric quadrupole coupling in Mg metal
E M Dickson; E F W Seymour; E M Dickson; Univ. Warwick, Coventy, UK; E F W Seymour; Univ. Warwick, Coventy, UK
Журнал:
Journal of Physics C: Solid State Physics
Дата:
1970-03-01
Аннотация:
The nuclear magnetic resonance of <sup>25</sup>Mg has been examined from 77 to 503 degrees K. The Knight shift of 0.112+or-0.004% is in good agreement with earlier values and is temperature independent within experimental uncertainties, in strong contrast to the other divalent hexagonal close-packed metal Cd. The nuclear electric quadrupole coupling parameter has been determined at 295 degrees K from the field dependence of the second order splitting of the central magnetic transition and has the value e<sup>2</sup>qQ/h=281+or-4 kHz. The dipolar linewidth, assumed Gaussian, is about 2 sigma =180 Hz.
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