The heavy fermion compound YbCu4Cd.

We reinvestigate the physical properties of YbCu$_{\mathrm{4}}$Cd single crystals. It has been shown that both YbCu$_{\mathrm{4}}$Ag and YbCu$_{\mathrm{4}}$Cd compounds have nearly the same Kondo temperature \textasciitilde 200 K. The magnetic susceptibility of YbCu$_{\mathrm{4}}$Ag shows a peak structure around 40 K, whereas a paramagnetism appears in YbCu$_{\mathrm{4}}$Cd. To elucidate the discrepancies in low temperature magnetic susceptibility data, single crystals of YbCu$_{\mathrm{4}}$Cd were grown by using Cd richer compositions. We show that the magnetic susceptibility of YbCu$_{\mathrm{4}}$Cd is sensitive to the growth conditions. The thermodynamic and transport properties of YbCu$_{\mathrm{4}}$Cd have been reinvestigated by means of magnetic susceptibility, magnetization, electrical resistivity, Hall effect, and specific heat measurements.