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Abstract:
We report on results of low-temperature specific heat experiments on single crystals of the cubic alloy CeIn3-xSnxCeIn3-xSnx (x=0.55,0.60,0.65x=0.55,0.60,0.65, and 0.80). The measurements support three-dimensional critical spin fluctuations in the vicinity of the magnetic instability, i.e. for xc≈0.67xc≈0.67, where the antiferromagnetic order vanishes.