Abstract
Heavy fermion CePtIn and CePdIn, together with the isoelectronic valence fluctuator CeNiIn, crystallizing in a hexagonal ZrNiAl-type structure, have attracted the attention of researchers for many years. We present magnetization, specific heat and electrical resistivity data measured on a CePtIn single crystal.
The measured data show certain anisotropy of electronic properties, which is discussed in terms of a competition of RKKY and Kondo interactions. No clear trace of magnetic phase transition is observed down to 0.4 K.
The specific heat and electrical resistivity data indicate a non-Fermi liquid state at low temperatures, which is discussed with respect to the isostructural CeNi Pd In 0.4 0.6 and CeNi Pd In 0.6 0.4 compounds, showing very similar electronic properties and lattice parameters.