band theory of ferromagnetism

band theory of ferromagnetism

[¦band ‚thē·ə·rē əv ‚fer·ō′mag·nə‚tiz·əm]
(solid-state physics)
A theory according to which ferromagnetism is caused by electrons in the unfilled energy bands of a crystal.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.