An assortment of OOMMF tips that will hopefully make your OOMMF life easier. Simulation cell size One of the easiest ways to speed up your simulation is to increase the cell size. Unfortunately this is also one of the easiest ways to get spurious results. Check out this explanation of discretization, exchange length and getting… Read More »
How to use the OOMMF periodic mesh Using the OOMMF periodic mesh (version 1.2a5) is very straightforward. You can simply replace your exising Oxs_RectangularMesh: Specify Oxs_RectangularMesh:mesh { cellsize {4e-9 4e-9 4e-9} atlas :atlas } With Oxs_PeriodicRectangularMesh, like so: Specify Oxs_PeriodicRectangularMesh:mesh { cellsize {4e-9 4e-9 4e-9} atlas :atlas periodic x } where the additional line periodic… Read More »
When doing micromagnetic simulations it is easy to end up with hundreds of output files, so part four of this OOMMF Tutorial covers some of the tools available for analysing OOMMF data. This list isn’t exhaustive – if I’ve missed out your favourite – please leave a comment! OOMMF outputs two types of data: vector,… Read More »
Starting OOMMF Part 2 of this OOMMF tutorial covers how to start OOMMF, and some tricks for starting OOMMF via the command line in both Windows and Linux. For more details on starting OOMMF, please see the official manual. Windows One way to load oommf is to double click on the oommf icon. If you… Read More »
I like using Notepad2-mod (see useful software, notepad2-mod webpage) to edit OOMMF mif files, but I do generally find it a lot easier to edit if the syntax is highlighted. Since mif files are essential tcl we can just tell notepad2 to treat mif files as tcl files for the purposes of highlighting: Open Notepad2-mod… Read More »