Abstract
High-field NMR Knight shift and magnetisation measurements were made along the easy (111) direction of a ferromagnetically saturated single crystalline GdZn sphere at low temperatures. From the magnetisation data the authors deduce a saturation moment of 7.5 mu B/Gd and a conduction-electron susceptibility of 5.1*10-3 EMU mol-1. The Knight shift measurements at T=1.6K revealed values of K(Gd)=-(5.0+or-1.9)*10-3 and K(Zn)=-(5.6+or-1.2)*10-3. The results are analysed in comparison with the corresponding values in Zn and LaZn using their susceptibility data. They conclude that there is a strong predominance of non-s conduction electrons in the density of states at the Fermi level of ferromagnetic GdZn. This supports an earlier NMR analysis of the indirect magnetic interactions in GdxLa1-xZn and may explain the unusually strong magnetic anisotropy of GdZn.
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