Jl. Mattei et al., THEORETICAL AND EXPERIMENTAL MODELING OF COMPOSITES WITH ORIENTED SOFT-MAGNETIC PARTICLES, Journal of magnetism and magnetic materials, 160, 1996, pp. 23-24
We present susceptibility measurements for systems of macroscopic soft
magnetic particles (shea rods, cylinders, oblate ellipsoids of millim
etric size) embedded in a non-magnetic matrix and oriented along the f
ield. Assumption of the effective medium theory allows the association
of a critical fraction of magnetic matter with the component of a ten
sorial demagnetizing factor which is associated with the applied field
direction.