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arXiv · 1705.03139

Large magnetic anisotropy in $Fe_xTaS_2$ single crystals

G. Wu·B. L. Kang·Y. L. Li·T. Wu·N. Z. Wang·X. G. Luo·Z. Sun·L. J. Zou·X. H. Chen
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Abstract

In intercalated transition metal dichalcogenide $Fe_xTaS_2$ (0.2 $\leq$ x $\leq$ 0.4) single crystals, large magnetic anisotropy is observed. Transport property measurements indicate that heavy Fe-doping leads to a large anisotropy of resistivity ($ρ$$_{c}$/$ρ$$_{ab}$). A sharp M-H hysteresis curve is observed with magnetic field along c-axis, while a linear magnetization appears with magnetic field applied in the ab-plane. The angular dependent magnetic susceptibility from in-plane to out-of-plane indicates that magnetic moments are strongly pinned along the c-axis in an unconventional manner and the coercive field reaches as large as 6 T at T = 5 K. First-principles calculation clearly suggests that the strong spin-orbital coupling give rise to such a large anisotropy of magnetism. The strong pinning effect of magnetic moments along c-axis makes this material a very promising candidate for the development of spin-aligner in spintronics devices.

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G. Wu, B. L. Kang, Y. L. Li, T. Wu, N. Z. Wang, X. G. Luo, Z. Sun, L. J. Zou, X. H. Chen. 2017-05-09. Large magnetic anisotropy in $Fe_xTaS_2$ single crystals. https://arxiv.org/abs/1705.03139

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