Giant coercivity in single crystal Ta3FeS6 film

Van der Waals (vdW) layered ferromagnetic materials provide a unique platform for fundamentalspintronic research, and have broad application prospects in the next-generation spintronic devices. In thisstudy, we synthesize high-quality single crystals of vdW intrinsic ferromagnet Ta3FeS6 by the chemical vaportransport method. We obtain thin layer samples of Ta3FeS6 with thickness values ranging from 19 to 100 nm bythe mechanical exfoliation method, and find that their corresponding Curie temperatures are between 176 and133 K. The anomalous Hall measurement shows that the Ta3FeS6 has out-of-plane ferromagnetism with thecoercivity reaching 7.6 T at 1.5 K, which is the largest value in those of the layered vdW ferromagneticmaterials reported so far. In addition, we observe that the reversal polarity of the hysteresis loop changes signwith temperature increasing. Our work provides an opportunity to construct stable and miniaturized spintronic devices and present a new platform for studying spintronics based on van der Waals magnetic materials