The magnetic properties of CaCo$_{ 2}$As$_{ 2}$ single crystal was systematically studied by using dc magnetization and magnetic torque measurements. A paramagnetic to antiferromagnetic transition occurs at $T_N$ = 74 K with Co spins being aligned parallel to the c axis. For $H \parallel c$, a field-induced spin-flop transition was observed below $T_N$ and a magnetic transition from antiferromagnetic to paramagnetic was inferred from the detailed analysis of magnetization and magnetic torque. Finally, we summarize the magnetic phase diagram of CaCo$_{ 2}$As$_{ 2}$ based on our results in the \emph{ H-T} plane.
Categories: cond-mat.supr-con cond-mat.other cond-mat.str-el