Fig. 8From: Magnetic-Field-Assisted Assembly of Anisotropic Superstructures by Iron Oxide Nanoparticles and Their Enhanced MagnetismMFM characterization of the rod-shaped superstructures. a AFM image of the superstructures, with an inset of SEM image. b MFM image of the superstructures in a demagnetized state. c MFM image of the superstructures in a remanent state after saturation along H //. d MFM image of the superstructures in a remanent state after saturation along H ⊥ Back to article page