Dielectric Polarization

dielectric polarization

[‚dī·ə′lek·trik ‚pō·lə·rə′zā·shən]

Polarization, Dielectric


(1) The displacement of positive and negative charges in opposite directions in a dielectric. Polarization occurs through the action of an electric field or other external factors, such as mechanical stress in the case of piezoelectric crystals. Dielectric polarization can also arise spontaneously in pyroelectric crystals, particularly in ferroelectrics.

(2) The dipole moment per unit volume of a dielectric.

References in periodicals archive ?
According to the Debye equation, relaxation of dielectric polarization occurs at a natural resonant frequency and when internal frequency has collapsed.
The dependence of contributions of different components of dielectric polarization, such as electric, ionic, and orientational polarization on the frequency of the applied electric field, is responsible for the change in the value of the dielectric constant.
To calculate the torque and the rotational velocity spectra we first determine the particle complex polarizability by using a technique based on a weighted average of the dielectric polarization, which has the advantage of being applicable to any geometrical shape (spherical or doublet shaped) of the yeast.
For example, the dielectric polarization and electric fields are odd under parity transformations and even under time-reversal transformations.
The MCPs use electrode strips to create dielectric polarization, allowing for the movement of ions toward or away from a positive or negative charge.
They then switch focus to nonequilibrium electrokinetic phenomena in chapters discussing field-induced dielectric polarization, field-induced double layer polarization, dielectrophoresis, and electrorotation.
The field-induced polarization can be due to capacitive charging of bulk electrolyte ions into the double layer near the surface or by dielectric polarization of the surface substrate and medium molecules by the penetrating field.
Unlike rotational or vibrational viscometers for measuring cure, this device uses a stationary sensor built into its baseplate to measure dielectric polarization and temperature of the material.
The influence of an electric field on such a material is the partial separation of positive and negative charges, called dielectric polarization, i.
02, the reduction in the values of dielectric constant and complex dielectric constant with increasing concentration of Praseodymium is due to depicting concentration of iron ions at B-sites which play a dominant role in dielectric polarization due to the presence of second phase.
Baker-Jarvis, A general dielectric polarization evolution equation, IEEE Trans.
Nonlinear optics (NLO) is the branch of optics that describes the behavior of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light.