Fig. 5: The correlation between the particle orientation and the coercivity.
From: Superstructure magnetic anisotropy in Fe3O4 nanoparticle chains
a Comparison of magnetization reversal curves for cubic and orthorhombic particles: single particle or chain with 3 or 7 particles stuck together. b Symmetry effects in particle rotations for odd and even number of particles in a chain. c Magnetization reversal curves for hard and easy axis alignment of particle chains. From (a– c), red color maps the magnetization component parallel to the c-axis, and blue color denotes magnetization parallel to the c-axis. d–f Representative HR-STEM images of Fe3O4 nanoparticle arrays obtained via pressure-induced assembly.
