Source of the Ferromagnetism (image) Eindhoven University of Technology Caption The electron density of states on a grain boundary of defects. The arrows (pointing in the reader's direction) indicate the direction of the magnetic moments. Credit Kees Flipse, Eindhoven University of Technology Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.