ÒImage
ÒThere are blocks of cells, a model of one is displayed above.
ÒEach small square dot is an atom modelling hundreds /thousands of magnetic dipoles.
Òμcell averages
out, approximately the dipole moment in each cell, μcell =Nspins *μ
ÒWhy the micromagnetics approach? Because MC simulation using the atomic model is a challenge
μcell