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arXiv · 1706.07989

The magnetic properties and structure of the quasi-two-dimensional antiferromagnet CoPS$_3$

A. R. Wildes·V. Simonet·E. Ressouche·R. Ballou·G. J. McIntyre
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Abstract

The magnetic properties and magnetic structure are presented for CoPS$_3$, a quasi-two-dimensional antiferromagnet on a honeycomb lattice with a Néel temperature of $T_N \sim 120$ K. The compound is shown to have XY-like anisotropy in its susceptibility, and the anisotropy is analysed to extract crystal field parameters. For temperatures between 2 K and 300 K, no phase transitions were observed in the field-dependent magnetization up to 10 Tesla. Single-crystal neutron diffraction shows that the magnetic propagation vector is {\bf{k}}= $\left[010\right]$ with the moments mostly along the $\mathbf{a}$ axis and with a small component along the $\mathbf{c}$ axis, which largely verifies the previously-published magnetic structure for this compound. The magnetic Bragg peak intensity decreases with increasing temperature as a power law with exponent $2β= 0.60 \pm 0.01$ for $T > 0.9~T_N$.

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A. R. Wildes, V. Simonet, E. Ressouche, R. Ballou, G. J. McIntyre. 2017-06-24. The magnetic properties and structure of the quasi-two-dimensional antiferromagnet CoPS$_3$. https://doi.org/10.1088/1361-648x%2Faa8a43

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