Knight shift,hyperfine field,NMR frequency and magnetization of a Neel-type nickel single crystal

The field dependence of the NMR line center frequency of naturally abundant⁶¹Ni has been studied with Néel-type nickel single crystals at 4.2 K. For internal fields H_i lower than H_is, which is the field necessary for complete magnetic saturation, a nonlinear correlation between and H_i was found due to changes of the orientation of the hyperfine field with H_i. For fields larger than H_is the linear variation lead to K=111.10^–4 for the Knight shift. Using available susceptibility data, we find _p=28.10^–6 emu/mole and _vv=92.10^–6 emu/mole.