| http://www.w3.org/ns/prov#value | - As is known to those skilled in the art, ferromagnetism is a property, exhibited by certain metals, alloys, and compounds of the transition (iron group), rare-earth, and actinide elements, in which the internal magnetic moments spontaneously organize in a common direction; this property gives rise to a permeability considerably greater than that of a cuum, and also to magnetic hysteresis.
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