Ferroelectric

Name:
Ferroelectric
Detailed information:
A crystalline material such as barium titanate, monobasic potassium phosphate, or potassium-sodium tartrate (Rochelle salts) that, over certain limited temperature ranges, has a natural or inherent deformation (polarization) of the electrical fields or electrons associated with the atoms and groups in the crystal lattice. This results in the development of positive and negative poles and a consequent “direction” of polarization, which can be reversed when the crystal is exposed to an external electric field. Ferroelectric crystals are internally strained and, as a consequence, show unusual piezoelectric and elastic properties.

Use:

Capacitors, transducers, computer technology.

See Ceramic, Ferroelectric.