Magnetocaloric (Fe-B)-based amorphous alloys

► Precise tuning of the Curie temperature is vital for application of magnetocaloric materials. ► For Fe-B‐based amorphous alloys, we present a simple scheme to estimate the Curie temperature. ► Curie temperature of these ternary alloys is determined by the atomic fraction of each component. ► The magnetic entropy change shows a more complex behavior with varying Fe content.