Känzig, Werner Formerly, Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts.
Last reviewed:January 2020
- Ferroelectric domains
- Dielectric properties
- Piezoelectric properties
- Crystal structure
- Antiferroelectric crystals
- Origin of phase transition
- Related Primary Literature
- Additional Reading
Crystalline substances which have a permanent spontaneous electric polarization (electric dipole moment per cubic centimeter) that can be reversed by an electric field. In a sense, ferroelectrics are the electrical analog of the ferromagnets, hence the name. The spontaneous polarization is the so-called order parameter of the ferroelectric state, just as the spontaneous magnetization is the order parameter of the ferromagnetic state. The names Seignette-electrics or Rochelle-electrics, which are also widely used, are derived from the name of the first substance found to have this property, Seignette salt or Rochelle salt. See also: Ferromagnetism
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