In physics the ferroelectric effect is an electrical phenomenon whereby certain materials may exhibit a spontaneous dipole moment, the direction of which can be switched between equivalent states by the application of an external electric field. Placing a ferroelectric material between two conductive plates creates a ferroelectric capacitor. Ferroelectric capacitors exhibit nonlinear properties and usually have very high dielectric constants. The fact that the internal electric dipoles can be forced to change their direction by the application of an external voltage gives rise to hysteresis in the "polarization vs voltage" property of the capacitor. In this case, polarization is defined as the total charge stored on the plates of the capacitor divided by the area of the plates. Hysteresis means memory and ferroelectric capacitors are used to make ferroelectric RAM for computers and RFID cards. Above retrieved from Answers.com Viper1
Not ferrous, but ferroelectric !
"ferrum" is the Latin word for iron.
only rom
A substance which contains iron(Fe) and is able to conduct electricity.
Its not true that electrocaloric effect (ECE) is observed only in ferroelectric polymers. ECE can be found in any typical dielectric material. If polarization switches from one direction to the other upon application or withdrawl of electric filed, the temperature of the material changes. It happens both in organic as well as inorganic materials. It is found that the EC coefficent is high near ferroelectric phase transition temperature.
Todd C. MacLeod has written: 'Modeling of metal-ferroelectric-semiconductor field effect transistors' -- subject(s): Field effect transistors, Current density, Electric potential, Ferroelectric materials, Mathematical models, Hysteresis
Steven W. Wood has written: 'Ferroelectric memory design'
Ali Sheikholeslami has written: 'Circuit design and modeling of ferroelectric memories'
it is agm or vsm
V. L. Aksenov has written: 'Neutron scattering by ferroelectrics' -- subject(s): Diffraction, Ferroelectric crystals, Neutrons
Hysteresis occurs most commonly in ferromagnetic and ferroelectric materials such as rubber bands and shape-memory alloys. When the material is flexed the atoms often break apart causing hysteresis.
Stuart H. Wemple has written: 'Polarization effects on magnetic resonances in ferroelectric potassium tantalate' -- subject- s -: Electron paramagnetic resonance, Magnetic properties, Polarization - Electricity -, Potassium tantalate