4.2.4.2 Biaxial Materials

Simulation of more than one anisotropy axis requires a sophisticated simulation approach. As outlined above, the dipoles have to be oriented in the axes directions, but they are not bound to a particular direction. This means that transitions between all of the four states outlined in Fig. 4.2 and Fig. 4.3 are possible.

Nevertheless it has to be taken into consideration that the number of dipoles is finite, which sets a hard limit to the sum of the polarization components of all the axes directions. When this limit is reached, the polarization components have to be reduced correspondingly. This is done following the ratio between the polarizations in the respective directions. The implemented algorithm is outlined in Fig. 4.7.

Figure 4.7: Algorithm for materials with more than one axis of anisotropy