1. Magnetic nanoparticles: nanoscale magnetism

Here we briefly recall the main characteristics of the magnetic properties of NPs; the interested reader is referred to the dossier [N 4 590] .

Nanomagnetism, or nanoscale magnetism, refers to materials with at least one nanoscale dimension. More precisely, this nanometric dimension must be smaller than or comparable to one of the characteristic lengths for the intrinsic magnetism of the material, and larger than the atomic or molecular scale. In this way, this small dimension can influence macroscopic magnetic properties. The intrinsic characteristic lengths for magnetism are determined...