Abstract

The 29Si NMR study has been performed in U(Ru 1− x Rh x) 2Si 2. The temperature dependence of the nuclear spin lattice relaxation time, T 1, has shown that the system is in the Fermi liquid state below about 60 K for x≦0.03. A sharp decrease of 1/ T 1 just below 17.5 K associated with the formation of the SDW in URu 2Si 2 becomes less remarkable with increasing x. For x≧0.3, the NMR spectrum has shown the appearance of the antiferromagnetic ordering with fairly large magnetic moments.

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