Weak low-temperature ferromagnetism and linear magnetoresistance in Lu_0.75Fe₆Sn₆ with a disordered HfFe₆Ge₆-type structure

2025/07/15 by Shi, Chenfei, Lin, Zhaodi, Liu, Qiyuan +8 · 2 citations
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2507.10964

Abstract

We report the synthesis of Lu_0.75Fe₆Sn₆ 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 Lu_0.75Fe₆Sn₆ 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 Lu_0.75Fe₆Sn₆, probably resulting from the structural disorder in the sample.

Citations

• Realization of Flat Band with Possible Nontrivial Topology in Electronic Kagome Lattice
• VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data
• SUPERFLIP– a computer program for the solution of crystal structures by charge flipping in arbitrary dimensions

Cited by

• Structural modulation, physical properties, and electronic band structure of the kagome metal UCr₆Ge₆
• Anisotropy of linear magnetoresistance in Kagome metal ZrV₆Sn₆

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