A new method to enhance the magnetocaloric effect in (Sc,Ti)Fe2 via magnetic phase separation

•This manuscript describes the novel finding that magnetic phase separation can significantly enhance the magnetocaloric effect in (Sc,Ti)Fe2.•The results of variable-temperature neutron diffraction establish the direct relationship between magnetic phase separation and magnetic entropy change.•This study suggests that magnetic phase separation can effectively achieve and control a large MCE in magnetic materials.