LLG's Easy-to-Use Integrated Graphics is
One of the Key Features that Distinguishes it from other Simulators of its
Integrated graphics provide the key visual information necessary for assessing the correctness of a problem's solution and for identifying underlying physical processes.
The examples of graphics in this section, listed in the navigation to the left, are all drawn from the two problems specified below, which involve media or a bar magnet.
The media problem has the following characteristics:
The random axis anisotropy gives rise to
random axis domains, which are easily understood.
The bar magnet problem has the following characteristics:
This problem is seeded with a completely random initial condition. LLG was able to navigate the energy surface and find a high-symmetry low-energy state. The Landau pattern is quasi bulk-like. The film is thick enough to support 3D-like behavior (ie t > 25nm); yet, thin enough that the top and bottom surfaces couple. There are 90-degree domain walls between the domains and two vortices, one up and one down. The corners are quasi vortex-like, in that there is significant canting up/down out of the plane, alternating around the structure. The 180-degree domain walls at the edges are of the Hubert tilted-type. The precision of the calculation is sufficient to resolve the vortex core in bulk and at the surface, as well as the magnetization canting at the corners.