Novel Magnetic and Transport Properties of UAu0.66Sb2 Single Crystal

Replace this text with your abstract body. We have successfully synthesized single crystals of UAu$_{\mathrm{0.66}}$Sb$_{\mathrm{2}}$ using a flux method and present a comprehensive study of the physical properties using magnetic susceptibility, electrical resistivity and specific heat measurements. UAu$_{\mathrm{0.66}}$Sb$_{\mathrm{2\thinspace }}$compound undergoes an antiferromagnetic transition at 71 K followed by a possible ferromagnetic transition below 30 K. The easy axis of magnetization is along the $c $axis. Two first-order meta-magnetic transitions and a magnetization plateau at$ M \approx \quad M_{\mathrm{max}}$/3 are observed and analyzed. The magnetization plateau at $M \approx \quad M_{\mathrm{max}}$/3 may result from two sublattice magnetization in UAu$_{\mathrm{0.66}}$Sb$_{\mathrm{2}}$. We map the field-temperature phase diagram for fields applied parallel to the easy magnetization \quad axis.