We report the synthesis of Lu0.75Fe6Sn6 single crystals with a Fe-kagome lattice using a self-flux method. The crystal structure, magnetic, thermodynamic and electrical transport properties were investigated. Structure refinement reveals that Lu0.75Fe6Sn6 has a HfFe6Ge6-type structure as the major framework intergrown with a CoSn-type structure, leading to a vacancy of 25% on the Lu-site and disorder on the Sn-site. It exhibits a significant magnetic anisotropy with weak ferromagnetism in the ab-plane below 40 K and antiferromagnetic behavior along the c-axis. The weak ferromagnetism is due to the canted antiferromagnetism with magnetic moment deviating from the c-axis to the ab-plane. Besides, an anisotropic non-saturated linear magnetoresistance is also observed in Lu0.75Fe6Sn6, probably resulting from the structural disorder in the sample.
@article{arxiv.2507.10964,
title = {Weak low-temperature ferromagnetism and linear magnetoresistance in Lu$_{0.75}$Fe$_6$Sn$_6$ with a disordered HfFe$_6$Ge$_6$-type structure},
author = {Chenfei Shi and Zhaodi Lin and Qiyuan Liu and Junai Lv and Xiaofan Xu and Baojuan Kang and Jin-Hu Yang and Yi Liu and Jian Zhang and Shixun Cao and Jin-Ke Bao},
journal= {arXiv preprint arXiv:2507.10964},
year = {2025}
}