NMR hyperfine spectrum of 143Nd in ferromagnetic cubic intermetallic NdAl2

Abstract The hyperfine spectrum of 143 Nd in NdAl 2 measured at T = 1.4 K provides values of ∣ a t ∣ = 786 ± 0.5 MHz and ∣ P t ∣ = 3.25 ± 0.03 MHz. The latter value is in agreement with the expected calculated value obtained from the 4 f ground state wave function in a crystal field plus molecular field model, which may be deduced from inelastic neutron scattering experiments combined with susceptibility measurements, or from polarized neutron diffraction experiments. It is shown that the 4 f electronic moment can be directly obtained from zero field NMR with good accuracy.