  Two-dimensional (2D) magnets exhibit unique physical properties for potential
applications in spintronics. To date, most 2D ferromagnets are obtained by
mechanical exfoliation of bulk materials with van der Waals interlayer
interactions, and the synthesis of single or few-layer 2D ferromagnets with
strong interlayer coupling remains experimentally challenging. Here, we report
the epitaxial growth of 2D non-van der Waals ferromagnetic bilayer FeSb on
SrTiO3(001) substrates stabilized by strong coupling to the substrate, which
exhibits in-plane magnetic anisotropy and a Curie temperature above 300 K.
In-situ low-temperature scanning tunneling microscopy/spectroscopy and
density-functional theory calculations further reveal that a Fe Kagome layer
terminates the bilayer FeSb. Our results open a new avenue for further
exploring emergent quantum phenomena from the interplay of ferromagnetism and
topology for application in spintronics.
