Abstract
Intercalated transition metal dichalcogenides have been widely used to study the magnetic and magnetoelectric transport properties in a strong anisotropic and spin–orbit coupling environments. In this study, ferromagnetic FeTa3S6 (also known as Fe1/3TaS2) single crystals were grown by using the chemical vapor transport method, and its magnetic and magnetoelectric transport properties were measured. The results show that FeTa3S6 has ferromagnetic ordered below 37K, with sharp switching of magnetization, butterfly-shaped double-peak magnetoresistance and anomalous Hall effect, and the magnetization and resistance have strong anisotropy. When a magnetic field is oriented parallel to the c-axis, the magnetoresistance exceeds 10% at a temperature of 10K, and negative magnetoresistance is generated when the magnetic field is larger than the switching field. When the direction of the magnetic field of 9T rotates from out-of-plane to in-plane, the anisotropic magnetoresistance exceeds 40%, and the angle-dependent Hall resistance presents a novel trend, which may be due to the existence of a topological Hall effect or other magnetic structures in the FeTa3S6 thin film. When the magnetic field of 9T rotates in the ab-plane of the sample, the in-plane anisotropic magnetoresistance conforms to the form of sin2φ. The experimental results of this study provide important information for the study of magnetic and magnetoelectric transport properties of intercalated transition metal dichalcogenides.
Highlights
In recent decades, transition metal dichalcogenides (TMDs) have attracted research interest due to their unique properties and potential applications in a broad range of areas [1–7]
The huge difference in magnetization measured in the two directions is due to the strong magnetocrystalline anisotropy of FeTa3S6 [25]
When the temperature is 10 K, the magnetic field is along the c-axis, the magnetization of FeTa3S6 reaches saturation at about 1T magnetic field, and its large coercivity may come from its huge uniaxial anisotropy [42, 43]
Summary
Transition metal dichalcogenides (TMDs) have attracted research interest due to their unique properties and potential applications in a broad range of areas [1–7]. FexTaS2 is a transition metal dichalcogenide of magnetic element intercalation 2H-TaS2, which exhibits abundant magnetic properties [23–34]. It is in the spin glass state for x < 0.2, ferromagnetic for 0.2 ≤ x ≤ 0.4, and antiferromagnetic for x > 0.4 [23, 24]. We successfully grew FeTa3S6 single crystals, studied their magnetic properties and magnetoelectric transport properties, and further measured their angle-dependent magnetoresistance and Hall resistance. These results show that FeTa3S6 has rich potential applications in the field of magnetic properties and spintronics, which is worthy of further theoretical and experimental research. The thickness of the thin film was measured by using an atomic force microscope (AFM) [40]
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