Successive magnetic transitions in the heavy-fermion superconductor Ce3PtIn11 studied by in 115 nuclear quadrupole resonance

Abstract

Nuclear quadrupole resonance (NQR) measurements were performed on the heavy-fermion superconductor Ce3PtIn11 with Tc=0.32K. The temperature dependence of both spin-lattice relaxation rate 1/T1 and NQR spectra evidences the occurrence of two successive magnetic transitions with TN1≃2.2K and TN2≃2.0K. In successive magnetic transitions, even though the magnetic moment at the Ce(2) site plays a major role, the magnetic moment at the Ce(1) site also contributes to some extent. While a commensurate antiferromagnetic ordered state appears for TN2