Tape magnetism
Band magnetism (also itinerant magnetism ) is a mechanism of magnetic exchange interaction . The magnetic moments are carried by moving band electrons. The elements iron , cobalt and nickel are band magnets. A simple model to explain the band magnetism is the Stoner model , which however only applies to a temperature T = 0.
Web links
Script from the University of Tübingen, from page 272 (PDF; 1.2 MB)