MadSci Network: Physics |
Permanent magnets are made of ferromagnetic materials. Ferromagnetism is due to the spin of un-paired electrons in these materials and is not related to conductivity. Therefore ferromagnetic materials may be compounds which are insulator. Here is a page which briefly explains ferromagnetism: ferromagnetism The following page contains a description about ferromagnetism although no explanation of its cause: http: //www.ee.washington.edu/conselec/CE/kuhn/magtape/95x1.htm The following page describes the materials of permanent magnets: http://www.stanfordmate rials.com/magnet.html The following page gives a detailed explanation of ferrormagnetism: http://www.magnetweb.com/Sect2A. htm Hope these may help.
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