magnum.fe

The open-source version of magnum.fe is currently not maintained any more. Please have a look at the documentation of the commercial branch at http://micromagnetics.org/magnum.fe and contact us if you are interesed in an evaluation copy of magnum.fe.

magnum.fe is a finite-element package for the solution of dynamical micromagnetic problems. It is written in Python and C++ and largely relies on the multi purpose finite-element library FEniCS. For the solution of open-boundary problems a hybrid FEM/BEM method is implemented that uses the BEM++ library. magnum.fe is free software and can be extended to your needs.

To get started, visit http://micromagnetics.org/magnum.fe .

Features

Integration of the Landau-Lifshitz-Gilbert Equation
Demagnetization-field computation via shell transformation or hybrid FEM/BEM method
Oersted-field computation via shell transformation or hybrid FEM/BEM method
Solution of the spin-diffusion model

Installation

Prerequisites

magnum.fe requires the following software/libraries to be installed:

FEniCS = 1.5
CMake >= 2.8
SWIG >= 2.0
G++ >= 4.0
dev-version of CBC.Block (optional)
BEM++ 2.0.3 python-pseudoinverse branch (optional)

Install dependencies in Ubuntu 14.04

Install FEniCS

$ sudo add-apt-repository ppa:fenics-packages/fenics
$ sudo apt-get update
$ sudo apt-get install fenics

Install build dependencies

$ sudo apt-get install g++ swig cmake

Install CBC.Block

$ git clone https://bitbucket.org/fenics-apps/cbc.block.git
$ cd cbc.block
$ sudo python setup.py install

For installation of BEM++, see http://www.bempp.org/.

Build and install

To build magenum.fe with cmake do

$ cd /path/to/magnum.fe
$ mkdir build
$ cd build
$ cmake ..
$ make
$ sudo make install

Create docker container

magnum.fe can be virtualized with docker (http://www.docker.com) for easy deployment to other machines. In order to create a docker container run

$ cd /path/to/magnum.fe
$ sudo docker build .

This procedure should download all necessary software and install magnum.fe into the container. You need Docker >= 1.0 to build the container.

Test

You can test your installation by running the unit tests

$ cd tests
$ python run_all.py

Build documentation

The following applies to Ubuntu.

Install sphinx

$ sudo apt-get install python-sphinx

Install RTD theme

$ sudo apt-get install python-pip
$ sudo pip install sphinx_rtd_theme

Generate documentation (HTML)

$ cd /path/to/magnum.fe/doc
$ make html

License and Disclaimer

magnum.fe is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

magnum.fe is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the GNU Lesser General Public License for more details.

micromagnetics / magnum.fe

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