Results 241 to 250 of about 708,160 (292)

Anomalous Polarization Current in Dielectrics

Physica Status Solidi (a), 1984
The isothermal polarization current in polar dielectrics with simultaneous accumulation of a near-electrode space charge is considered. Assuming an exponential kinetics of the electric counter-field formation, an analytical expression for polarization current is obtained. An anomaly of the current course is discussed in detail.
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Dielectric Relaxation in Disordered Polar Dielectrics

Ferroelectrics, 2002
A review of the current understanding of the effect of crystal lattice defects on the low-frequency dielectric relaxation properties in single crystals and polycrystalline polar dielectrics is given. Special attention is paid to different long-term phenomena, found in dielectric experiments, such as a low frequency relaxation polarization, a very slow ...
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The permittivity of polar dielectrics

Russian Journal of Physical Chemistry A, 2007
The best known works on the theory of permittivity of polar dielectrics are considered. Equations are obtained that relate the dipole moment of a molecule in a medium to substance permittivity and can be used in calculations of the polarization characteristics of rarefied gases and condensed polar dielectrics.
N. M. Putintsev, D. N. Putintsev
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Spontaneous Polarization Noise in Polar Dielectrics

Journal of Applied Physics, 1964
The spontaneous fluctuations of polarization in polar dielectrics are considered by using the Einstein thermodynamic method, a general dielectric theory method, and an equivalent circuit method. Mean-square fluctuation of the polarization field is obtained by the first two methods and the frequency spectrum by use of the dispersion properties.
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A theory of the dielectric polarization of polar substances

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1956
Abstract With the aid of classical statistical mechanics, a general expression for the static dielectric constant is derived. It is found, as in earlier work, that the dielectric constant is dependent upon the mean-square dipole moment of a macroscopic spherical sample of the substance.
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On Polarization in Liquid Dielectrics

The Journal of Chemical Physics, 1953
A theory of polarization originally developed for crystals is extended in such a way as to be applicable to dc measurements in liquid dielectrics. In Sec. II the general time dependent solution of the relevant differential equation is obtained by the method of eigenvalues. It leads to expressions for the ``charging current'' in Eq.
George Jaffé, Charlotte Z. LeMay
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Nonlinear dielectric response of polar liquids

The Journal of Chemical Physics, 2015
The dielectric constant of a polar liquid in a strong electric field changes, in the lowest order, proportionally to the squared field magnitude. The proportionality coefficient (dielectric slope) is traditionally analyzed by mean-field models in terms of the saturation of alignment of individual dipoles as prescribed by the Langevin function.
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Polarization in dielectric liquids

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1985, 1985
Measurements to verify the validity of drift dominated conduction theory, using stainless-steel, parallel-plate electrodes and purified nitrobenzene as a dielectric material show increased terminal current levels well above the theoritical levels as frequency is decreased, figure(1).
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Dielectric Polarization and Relaxation

1984
A review of field quantities and formal results is followed by discussion of equilibrium theories and simulations for polar liquids. Relaxation processes are considered primarily in terms of correlation function treatments, starting with models of behavior in simple systems and going on to cooperative behavior in more complex systems as a function of ...
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Dielectric Polarization and Electric Displacement in Polar-Molecule Reactions

The Journal of Physical Chemistry A, 2015
The aim of this work is to investigate the dielectric polarization in polar-molecule reactions in the liquid phase theoretically. On the basis of the modified Smoluchowski equation, the analytic expression of the polarization is derived. The result shows that the expression of the polarization in polar-molecule reactions is quite different from the one
Kama, Huang, Tao, Hong
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