Conductivity Tab

Setting Item

Notes

Conductivity Type

Selects one from Insulator, Conductor, Semiconductor or Perfect conductor.

Anisotropy

Selects either Isotropic or Anisotropic.

• Anisotropic is selectable when Conductor and Linear are selected in the Electric field analysis (Coulomb).

Temperature Dependency

Selectable for the magnetic field harmonic-thermal coupled analysis.

Select either Yes or No.

When Yes is selected and is clicked, [Temperature-Conductivity] Table will show up.
Fill in the table.

• If Temperature Dependency is selected, the analysis becomes bidirectional between magnetic and thermal analyses.
  Calculation will be repeated until it reaches the convergence.
  The calculation time, therefore, will be longer than the case of no time dependency.

Nonlinearity

Selectable in the Electric Field Analysis (Coulomb)

Select Linear if the electric conductivity is constant regardless of the intensity of the electric field.
If Linear is selected, electric conductivity can be entered.

Select Nonlinear if the electric conductivity is dependent on the intensity of the electric field.
Nonlinear is selectable when Isotropic is selected.
When Nonlinear is selected and is clicked, the [Electric field-Current density] Table will appear.
Fill in the table.

Conductivity

The entry field for the conductivity will show up when Conductor is selected for Conductivity Type and Linear is selected in Nonlinearity.

The significand is a real number greater than 0.

Conductivity Matrix

The matrix will show up when Anisotropic is selected.

The significand is a real number equal to or greater than 0. It is not allowed to enter 0 in (x, x), (y, y), and (z, z).

Direction of the anisotropic material depends on the setting on the [Direction] tab of body attribute.

With the default setting on the Direction tab, (x, y, z) in the above figure matches with (X, Y, Z) of the modeling window.

Semiconductor

The entry field for the semiconductor will show up when Semiconductor is selected.

Specify the coefficient of Hall and the Hall mobility.

Multilayer Electrode

Electrode has multilayer structure. It is applicable to the electromagnetic analysis only.

Two layers are defined in the table above and analysis is performed as follows. In the table, the first row is Layer No. 1 and the second row is Layer No. 2. Please keep this layer order in mind.

1. Solid Body in 3D Analysis

Fig 1 represents the cross section of solid body. Inside of the body is Layer No.2 which is surrounded by Layer No. 1. The value set in the table is used for the thickness of Layer No. 1, but not used for Layer No. 2 assuming that it is thick enough.

2. Sheet Body in 3D Analysis

If [Take thickness of face/edge electrode into account] is not opted in the electromagnetic analysis, calculation is executed assuming the thickness direction is as in Fig 2. The thickness of Layer No1 is taken into account whereas that of No2 is considered to be thick enough.

If "Take thickness of face/edge electrode into account" is opted in the electromagnetic analysis, the order of layers is defined on the Direction tab of the body attribute. The layer No.2 is placed first and followed by layer No. 1 in the direction of vector specified on the Direction tab.

Figure 3 shows the sheet bodies normal to the Z axis. If (0,0,1) is set to the vector on the Direction Tab, calculation is performed assuming that the order of layers is as in Figure 3.

3. Sheet Body in 2D Analysis

This is the same case as 1 above. Please consider Fig 1 as the front face of the drawing on the XZ plane in 2D analysis.

4. Wire Body in 2D Analysis

This is the same case as 2 above. Please consider Fig 2 and 3 as the front face of the drawing on the XZ plane in 2D analysis.

Fig 1	Fig 2	Fig 3

• Body attribute, Electrode tab, and Surface roughness
  If "Take thickness of face/edge electrode into account" is not opted in the electromagnetic analysis, the surface roughness is only taken into account if one layer is defined for multilayer electrode.

Setting Item

Notes

Anisotropy

Sets either Isotropic or Anisotropic.

Temperature Dependency

Sets either No or Yes.

If Yes is set, by clicking , the [Temperature-Resistivity] Table will show up.

Enter the data there.

• For the data out of the table range, the data of nearest 2 points will be extended linearly.

Resistivity

Available only if the temperature dependency is No and the anisotropy is Isotropic.

The significand is a real number greater than 0.

Resistivity Matrix

Available only if the temperature dependency is No and the anisotropy is Anisotropic.