10.1.1 Geometry and Material Parameters

The elliptic particles have a long axis of 165 nm, a short axis of 55 nm and a thickness of 10 nm. Their shape and the finite element mesh, which consists of 5068 nodes and 23188 elements, are given in Fig. 10.1. The material parameters of permalloy (Ni$_{80}$Fe$_{20}$), which have been used for the simulations, are given in Tab. 10.1.

Figure 10.1: Shape and finite element mesh of an elliptical nanoparticle.

Table 10.1: Material parameters for permalloy.

$J_\mathrm{s}$ (T)	1
$A$ (pJ/m)	13
$K_1$ (MJ/m$^3$)	$\approx 0$
$l_\mathrm{s}=\sqrt{2 \mu_0 A/J_\mathrm{s}^2} \mathrm{(nm)}$	5.7
$l_\mathrm{K}=\sqrt{A/K_1} \mathrm{(nm)}$	161