  We report the magnetic, thermal, magnetocaloric and transport properties of
polycrystalline NdCuSi. The compound shows a weak antiferromagnetic ordering,
as confirmed by different measurements. Arrott plots indicate that the magnetic
phase transition is found to be second order in nature. The isothermal magnetic
entropy change calculated using the magnetization data gives a value of 11.1
J/kg K for a field change of 50 kOe. The follows h2/3 dependence (h is the
reduced field) with a negative intercept, which is predicted by mean field
theory for second order phase transitions. Landau theory of phase transition
was applied to calculate change in entropy, which was found to be in good
agreement with that calculated directly from the magnetization data.
Temperature dependence of electrical resistivity shows a pronounced anomaly at
the ordering temperature, which is attributed to the spin fluctuations.
