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Neutron inelastic scattering experiments on polycrystalline PrSn3 have been performed. A least-squares fitting procedure including exchange fluctuations yields the crystal-field parameters x=0.79±0.03 and W=0.157±0.005 meV, which correspond to a Γ5 ground state with an overall splitting of 74 K, and the paramagnetic molecular field parameter λp=(1.8±0.3)×1023 Oe2/erg. The crystalfield parameters are consistent with susceptibility and zero-field magnetization data. The anomalous temperature dependence of the crystal-field transition line widths is interpreted in terms of spin-electron relaxation effects.

The transversal magnetoresistance of the cubic (AuCu3 structure) antiferromagnetic GdIn3 compound has been investigated along the [100] axis within the temperature range 2 to 8 K in magnetic fields up to 17.2 T. Two kinds of experiments have been performed: the angular dependence of the magnetoresistivity at constant external magnetic field for a rotating sample as well as the field dependence of the magnetoresistivity for chosen directions. The magnetoresistivity has been found to be positive and anisotropic. Moreover, oscillations of the magnetoresistivity have been observed at magnetic field above 6 T. The angular dependence of the frequency of the oscillations is given.

Spin-disorder contribution to the electrical resistivity of NdSn 3 within the temperature range 6–100 K associated with the crystal-field splitting of the ground state multiplet ( I = 9 2 ) has been calculated. The experimental data are compared with the theoretical predictions and qualitative agreement is obtained.