Tailoring magnetism in CoNi films with perpendicular anisotropy by ion irradiation

摘要

This paper reports on the influence of ion irradiation on the magnetic properties of Co/Ni multilayers with perpendicular magnetic anisotropy (PMA). This material is a very promising candidate for ultrahigh density spintronic applications since it exhibits high polarization and low damping parameters. We show that PMA can be tailored in a controlled way by using uniform He~+ ion irradiation or focused Ga~+ ion beam.