The 20 International Colloquium on Magnetic Films and Surfaces (ICMFS-2009) is a satellite conference to the International Conference on Magnetism, held July 27-31, 2009 in Karlsruhe, Germany.

The ICMFS-2009 brings together scientists from all areas of magnetism in lower dimensions. The Colloquium aims at a free exchange of new results and ideas for advancing the field of magnetism at surfaces, interfaces and in nanostructures.

There are no parallel sessions. Besides oral presentations of invited and selected contributed papers, there is ample space for poster discussions.

The ICMFS (initially named as International Colloquium on Magnetic Thin Films, ICMTF) was launched in 1964 in London by Professor E.P. Wohlfarth.

Previous Colloquia were held: