Coexisting\nFerromagnetic–Antiferromagnetic\nState and Giant Anomalous Hall Effect in Chemical Vapor Deposition-Grown\n2D Cr<sub>5</sub>Te<sub>8</sub>

Two-dimensional\n(2D) magnets, as an important member of the 2D\nmaterial family, have emerged as a promising platform for spintronic\ndevices. Herein, we report the chemical vapor deposition (CVD) growth\nof highly crystalline submillimeter-scale self-intercalated metallic\n2D ferromagnetic (FM) trigonal chromium telluride (Cr<sub>5</sub>Te<sub>8</sub>) flakes on inert mica substrates. Through magneto-optical\nand magnetotransport measurements, we unveil the exceptional magnetic\nproperties of these 2D flakes. The trigonal Cr<sub>5</sub>Te<sub>8</sub> flakes exhibit a strong anisotropic FM order with a Curie temperature\nabove 220 K. Notably, an emergent antiferromagnetic (AFM) state is\nobserved in the MOKE signal from ultrathin Cr<sub>5</sub>Te<sub>8</sub> flakes around the Curie temperature. The AFM state has a relatively\nweak interlayer exchange coupling, allowing a switching between the\ninterlayer AFM and FM states by tuning the temperature. Meanwhile,\nthe trigonal Cr<sub>5</sub>Te<sub>8</sub> flakes exhibit a giant anomalous\nHall effect (AHE), with an anomalous Hall conductivity of 710 Ω<sup>–1</sup> cm<sup>–1</sup> and an anomalous Hall angle\nof 3.5% at zero magnetic field, surpassing typical itinerant ferromagnets.\nFurther analysis suggests that the AHE in trigonal Cr<sub>5</sub>Te<sub>8</sub> is primarily driven by the skew-scattering mechanism rather\nthan the intrinsic or extrinsic side-jump mechanism. These findings\ndemonstrate the potential of CVD-grown ultrathin Cr<sub>5</sub>Te<sub>8</sub> flakes as a promising 2D magnetic material with exceptional\nAHE properties for future spintronic applications.