Observation of magnetic domains in V_1/3NbS₂

We synthesized single crystals of intercalated transition metal dichalcogenide V_1/3NbS₂. Powder X-ray diffraction (PXRD) and energy-dispersive X-ray spectroscopy (EDS) measurements confirm a stoichiometric ratio of V_1/3NbS₂ though with a slight sulfur deficiency (1.5 at %). Magnetization measurements confirm a paramagnetic-to-anti-ferromagnetic phase transition at a Neel temperature T_N ≈ 53 K. The AFM state has a small residual magnetization of ~0.01 μ_B/V in ab-plane and ~0.006 μ_B/V in c-plane. The temperature dependence of the coercive field was measured from 2K to 50K. Electrical resistivity, magnetoresistance, and Hall resistivity measurements reveal the existence of an Anomalous Hall Effect. For comparison, we also studied V_1/4NbS₂ and found a paramagnetic-to-antiferromagnetiic phase transition at T_N ≈ 8K. And there is a smaller effective magnetic moment of μ_eff∣∣ = 2.62μ_B/V.