NMR studies on EuNi2Si2 with trivalent Eu ion

We have performed Si-29 nuclear magnetic resonance experiment to investigate microscopic magnetic properties of EuNi2Si2 with trivalent Eu ion. The temperature dependence of the nuclear spin-lattice relaxation rate 1/T1 can be explained by considering the two relaxation processes: conduction electrons and the thermally activated spins in the excited levels of Jmultiplet. The temperature dependence of the Knight shift could roughly be reproduced with the spin-orbit coupling constant estimated from 1/T1.