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A magnet made o alnico, an airn alloy. Ferromagnetism is the pheesical theory which explains hou materials acome magnets.

Ferromagnetism is the basic mechanism bi which certaint materials (sic as airn) form permanent magnets, or are attractit tae magnets. In pheesics, several different types o magnetism are distinguished. Ferromagnetism (includin ferrimagnetism)[1] is the strangest type; it is the anly teep that creates forces strang eneuch tae be felt, an is responsible for the common phenomena o magnetism encoontered in everyday life. Ither substances respond waikly tae magnetic fields wi twa ither types o magnetism, paramagnetism an diamagnetism, but the forces are sae waik that thay can anly be detectit bi sensitive instruments in a laboratory. An everyday ensaumple o ferromagnetism is a refrigerator magnet uised tae hauld notes on a refrigerator duir. The attraction atween a magnet an ferromagnetic material is "the quality o magnetism first apparent tae the auncient warld, an tae us the day".[2]

References[eedit | eedit soorce]

  1. Chikazumi 2009, p. 118
  2. Richard M. Bozorth, Ferromagnetism, first published 1951, reprinted 1993 by IEEE Press, New York as a "Classic Reissue." ISBN 0-7803-1032-2.