RelBiPermeability¶

Type:: 2-Tensor, or section
Range:: [v_1, …, v_9]
Default:: -/-
Appearance:: optional

This parameter specifies the relative electric permeability (the coupling between magnetic flux $\VField{B}$ field and the electric field $\VField{E}$ ) $\tilde{\TField{\mu}}_{\mathrm{rel}}$ as follows:

$\begin{alignat*}{1} \tilde{\TField{\mu}} &= \tilde{\TField{\mu}}_{\mathrm{rel}} \sqrt{\varepsilon_0\mu_0} \end{alignat*}$

Warning

Usually the relative electric permeability $\tilde{\TField{\mu}}_{\mathrm{rel}}$ is defined relative to the background permittivity and permeability. We do not follow this convention as it is not clear how this convention is applied for general an-isotropic tensors $\TField{\varepsilon}$ and $\TField{\mu}$ .

The relative electric permeability $\tilde{\TField{\mu}}_{\mathrm{rel}}$ is typically linked to the magnetic permittivity $\tilde{\varepsilon}$ . See there for detailed discussion of bi-anistropic materials.