Abstract: 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.

Key words: transition metal chalcogenides, exchange bias, negative magnetoresistance, anomalous Hall e?ect, electrical transport