Near-room-temperature ferromagnetism in Ti-stabilized Iron Chalcogenide

Binary transition metal chalcogenides are a rich playground for magnetic and electronic phenomena. We report the synthesis and characterization of a layered iron selenide system, which is structurally stabilized by the introducing of Ti. Such a layered material exhibits near room temperature ferromagnetic order and displays metallic electronic transport properties. The structural analysis reveals a complex morphology, with iron selenide alloying with titanium selenide to stabilize the structure. This combination of exfoliability, metallicity, and high-temperature ferromagnetism positions the system as a promising platform for spintronic and magnetic memory technologies.