Question

physics of the magnetic properties of anisotropic nanoparticles

Answer 1

Nanoparticles become magnetically harder as the surface anisotropy increases in magnitude, and the way in which the coercive field changes with this quantity.

Magnetic properties of nanoparticles (NPs) are dominated by two main features [14]; finite-size effects (single-domain, multi-domain structures and quantum confinement) and surface effects, which results from the symmetry breaking of the crystal structure at the surface of the particle, oxidation, dangling bonds, surface stain, etc.