Experimental characterization demonstrates controllable single-domain states in nanoscale cobalt dot arrays, indicating potential for high-density magnetic data storage.
Key Points
Fabricate high-density nanoscale cobalt dot arrays via interference lithography and characterize their magnetic domain structure using magnetic force microscopy.
Fabricated cobalt dot arrays with diameters of 70 nm and 100 nm using interference lithography.
Characterized domain configuration and magnetic moment orientation using magnetic force microscopy.
Produced arrays achieving an areal density of 7.2 × 10⁹ dots/in².
Demonstrated that the fabricated dots exhibit single-domain behavior with magnetic moments that can be oriented either in-plane or out-of-plane.