Ferromagnetics

Part of speech: noun

Definitions

  1. Materials characterized by strong magnetic properties due to unpaired electron spins aligning parallel within domains, resulting in permanent magnetism after external magnetic field removal ; substances exhibiting spontaneous magnetization caused by electron spin interactions creating internal magnetic ordering ; solids that possess a high susceptibility to magnetization, maintaining magnetic orientation through cooperative alignment of atomic magnetic moments
  2. Materials showing intense magnetism from aligned electron spins forming regions of uniform magnetization, retaining this magnetism without an external field ; substances with intrinsic magnetic ordering derived from the parallel arrangement of magnetic moments, producing permanent magnetic effects ; solids that respond strongly to magnetic fields through synchronous electron spin alignment, leading to lasting magnetic properties
  3. Substances that display permanent magnetic characteristics due to collective alignment of internal magnetic domains formed by electron spins ; materials whose atoms exhibit synchronized magnetic moments creating stable magnetic fields even without applied magnetism ; solids inherently capable of producing strong magnetization by virtue of cooperative electron spin ordering within microscopic regions

Etymology: Ferromagnetics is built from "ferro-", from Latin "ferrum" meaning iron, and "magnetic", from Greek "magnētis", after the lodestone of Magnesia, plus the plural noun ending "-ics", which names a field of study or a body of knowledge. The word therefore points to the study of substances behaving like iron, rather than to iron itself. The "-ics" ending is the key to its sense. Words such as "physics" and "electronics" name a science or technology, and "ferromagnetics" follows the same pattern, though in common use it more often refers to the materials themselves, as in the sense given here of strongly magnetic materials. The materials are named for iron because iron is the most familiar example of the behaviour, where the atomic magnetic moments align together and stay magnetised after an external field is removed.

Synonyms: ferromagnetic materials