Creating an Anisotropic Medium (Ferrite)

Create a ferrimagnetic medium. The medium is described by the permittivity and permeability tensors where the static magnetic field is orientated along the U axis, V axis and N axis respectively.

1. On the Construct tab, in the Define group, click the  Media icon. From the drop-down list, select the  Anisotropic (3D) icon.

   
   

   

   
   Figure 1. The Create Anisotropic Dielectric dialog (Polder tensor).

2. In the Tensor type field, from the drop-down list select Polder tensor (ferrites).
3. Specify the magnetic properties.
   1. Under Medium properties, in the Saturation magnetisation (Gauss) field, enter a value for 4 $\pi$ M_s.
   2. Under Medium properties, in the Line width (Oersted) field, enter a value for ΔH.
   3. Under Magnetostatic bias field, in the DC bias field (Oersted) field, enter a value for H₀.
   4. Under Magnetostatic bias field, from the Field direction drop-down list, select one of the following:
      • X directed
      • Y directed
      • Z directed
4. Specify the dielectric properties.
   1. In the Relative permittivity field, enter a value for ε_r.
   2. In the Dielectric loss tangent field, enter a value for tanδ.
5. In the Label field, enter a unique label for the ferrite medium.
6. Click Create to create the anisotropic medium and to close the dialog.