Ferromagnetic Kondo lattice behavior in Ce11Pd4In9

We report on the low-temperature physical properties of a novel compound Ce${}_{11}$Pd${}_4$In${}_9$ that crystallizes with the orthorhombic Nd${}_{11}$Pd${}_4$In${}_9$-type crystal structure (space group $Cmmm$). The compound exhibits ferromagnetic ordering at $T_{\mathrm{C}}$ = 18.6 K and an order-order transition at $T_{\mathrm{t}}$ $\sim$~1.6 K, as inferred from the low-temperature magnetic susceptibility, heat capacity and electrical resistivity data. In the paramagnetic region, the electrical transport in Ce${}_{11}$Pd${}_4$In${}_9$ is dominated by Kondo effect. Below $T_{\mathrm{C}}$, a distinct contribution due to ferromagnetic spin waves dominates the electrical resistivity data, while at the lowest temperatures, the electrical transport and thermodynamic properties are governed by strong electron-electron correlations. The features observed conjointly hint at strongly correlated ground state in Ce${}_{11}$Pd${}_4$In${}_9$ .