Abstract

We report magnetic susceptibility, electrical resistivity and specific heat measurements on single-crystal specimens of Ce 2 Cu 8 Al 9 with the rhombohedral Th 2 Zn 17 -type crystal structure. The low-temperature specific heat has revealed heavy-fermion behavior, i.e., C / T attaining an extremely large value of about 2.7 J/K 2 mol-Ce around 0.7 K, which is greatly reduced by an applied magnetic field, namely, down to less than half of the zero-field value for H =5.2 T. It is indicated from the present experiments that Ce 2 Cu 8 Al 9 is a new heavy-fermion material of T K ∼3 K.

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