B-H Characteristics

Linear - Non-linear Materials

$$\vec{B} = \mu \vec{H}$$

Linear magnetic materials: The slope of the B-H curve is constant and equal to

$$ \mu

$$ .

Non-linear magnetic materials: Ferromagnetic materials have a higher permeability than air. However, the permeability is not constant, and reduces as the magnetic field strength is increased. Ferromagnetic materials have a maximum flux density limit,

$$ B_{saturation}

$$ . It is usually around 1.6-2.0 T.