3d 族过渡金属插层二硫族化合物因其可调的丰富磁学性质和电学输运性质而备受关注. 为了探究 Fe 掺杂 MnNb₃S₆ 对其磁性和电输运性质的影响, 采用化学气相输运(chemical vapor transport, CVT) 方法, 将 Fe 和 Mn 元素等比例地插入 NbS₂ 层间, 制备出Fe_0.5Mn_0.5Nb₃S₆ 单晶, 并对其结构、磁性以及电输运性质进行表征. 研究结果表明, 样品与MnNb₃S₆ 相比, 磁各向异性表现出易磁化轴由面内 (ab-plane) 向面外 (c-axis) 倾斜; 在居里温度 TC 以下可以观察到沿面外的交换偏置行为, 这一物理现象可归因于 Fe 掺杂引入的无序相. 此外, 电输运性质的研究结果表明, 当温度低于 TC 时, 样品存在负磁电阻和反常霍尔效应. 进一步的分析表明, 这些现象与非平庸的拓扑磁结构密切相关.

Three-dimensional transition metal intercalated dichalcogenides have garnered significant attention owing to their tunable magnetic and electrical transport properties. This study investigated the impact of Fe doping on the magnetic and transport properties of MnNb₃S₆. Iron (Fe) and manganese (Mn) were intercalated into NbS₂ layers in equal proportions via chemical vapor transport (CVT), yielding Fe_0.5Mn_0.5Nb₃S₆ single crystals. Subsequently, the structural, magnetic, and transport properties were characterized. Mag-netic studies indicated a tilt in the easy magnetization axis from the ab-plane to the c-axis compared with that of MnNb₃S₆. Below the critical temperature (TC), an exchange bias was observed along the c-axis, attributed to the disorder introduced by Fe doping. Ad-ditionally, investigations of transport property indicated negative magnetoresistance and an anomalous Hall effect below TC. Further analysis indicated a close correlation between these phenomena and the nontrivial topological magnetic structures.