The magnetization M = dm/dV is defined as the magnetic dipole moment per unit volume.
The total current density is due to free and to magnetization current densities.
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 This definition is not unique. |
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For linear, isotropic, homogeneous (lih) magnetic materials we have:
| (SI units) | (Gaussian units) | |
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for
diamagnetic materials,
for
paramagnetic materials, permanent magnets are not lih.
Boundary conditions for H
:
(SI units),
(Gaussian units),
in general
The magnetostatic energy stored in a charge distribution is given by
in SI units.
In a linear isotopic, homogeneous material the total work done in establishing the free current distribution is
or
.