Spin-flop transition and magnetic phase diagram in CaCo$_{2}$As$_{2}$ revealed by torque measurements

W. Zhang; K. Nadeem; H. Xiao; R. Yang; B. Xu; H. Yang; X. G. Qiu

doi:10.1103/physrevb.92.144416

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arXiv · 1510.03496

Spin-flop transition and magnetic phase diagram in CaCo$_{2}$As$_{2}$ revealed by torque measurements

W. Zhang·K. Nadeem·H. Xiao·R. Yang·B. Xu·H. Yang·X. G. Qiu

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Abstract

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.

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W. Zhang, K. Nadeem, H. Xiao, R. Yang, B. Xu, H. Yang, X. G. Qiu. 2015-10-13. Spin-flop transition and magnetic phase diagram in CaCo$_{2}$As$_{2}$ revealed by torque measurements. https://doi.org/10.1103/physrevb.92.144416

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