Low temperature magnetic properties of TbRhIn5 intermetallic compound

The low temperature magnetic properties of a new intermetallic compound TbRhIn$_{5 }$were investigated by means of magnetic susceptibility, electrical resistivity, heat-capacity and magnetic x-ray diffraction measurements. This compound crystallizes in a HoCoGa$_{5}$-type tetragonal structure and orders antiferromagnetically at T$_{N}\sim $48 K. The x-ray resonant diffraction data below T$_{N}$ reveal an antiferromagnetic structure with wave vector ($\raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower.25ex\hbox{$\scriptstyle 2$} $ $\raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower.25ex\hbox{$\scriptstyle 2$} $ $\raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower.25ex\hbox{$\scriptstyle 2$} $ ) and the Tb moments are aligned along the $c$-axis. The temperature dependence of order parameter indicates reduced dimensionality and the magnetic properties of this compound are confronted to the properties of the other RRhIn$_{5}$ (R = rare earth).