| Abstract Scope |
Magnetic semiconductors (MSs) offer a promising platform for advancing new-generation information technologies by integrating both charge and spin functionalities. Despite extensive efforts aimed at achieving room-temperature (RT) operation, a crucial factor for practical applications, realizing RT ferromagnetism and achieving bulk production of high-quality crystalline MSs remains a challenge. Here we present the realization of RT ferromagnetism in iron-doped SnSe (Fe:SnSe), a van der Waals (vdW) single-crystalline ferromagnetic semiconductor (FMS) exhibiting a semiconducting bandgap of approximately 1.2 eV, alongside a Curie temperature (TC) surpassing room temperature (~310 K). The large-size Fe:SnSe FMS single crystals were grown using an industry-accepted temperature-gradient melt-growth process. Notably, the unique doping of diluted magnetic Fe atoms was achieved using FeI2 as the dopant precursor, characterized by a low melting point conducive to crystal growth. This scalable growth process holds promise for the production of various MSs large-size single crystals tailored to desired semiconducting and magnetic properties. |