In intercalated transition metal dichalcogenide FexTaS2 (0.2 ≤ x ≤ 0.4) single crystals, large magnetic anisotropy is observed. Transport property measurements indicate that heavy Fe-doping leads to a large anisotropy of resistivity (ρc/ρab). 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.
@article{arxiv.1705.03139,
title = {Large magnetic anisotropy in $Fe_xTaS_2$ single crystals},
author = {G. Wu and B. L. Kang and Y. L. Li and T. Wu and N. Z. Wang and X. G. Luo and Z. Sun and L. J. Zou and X. H. Chen},
journal= {arXiv preprint arXiv:1705.03139},
year = {2017}
}