Spin fluctuations in itinerant electron ferromagnet Sc3In

The nuclear spin-lattice relaxation time T1 of 45Sc and electrical and thermal resistivities in an itinerant electron ferromagnet Sc3In were measured in both ferromagnetic and paramagnetic states as a function of magnetic field strength. The observed magnetic field dependence of (T1T)-1 and negative magnetoresistivities in both states are explained very well by the self-consistently renormalized spin fluctuation theory in which the effect of magnetic field was taken into account. These experimental results support the spin fluctuation theory and suggest the importance of the effect of magnetic field on spin fluctuations.