On the exchange term in the dielectric constant of metalsKleinman's expression for the dielectric constant of metals is obtained by a simpler method.doi:10.1016/0375-9601(67)90269-1R. BlanchardY.P. VarshniElsevier B.V.Physics Letters A
It is found that the mechanism of the direct transition from the d-band to the conduction band under the calculated band structure is able to explain consistently the optical absorption and the dielectric constant. By calculating the energy decrease for an excited state of the system resulting ...
dielectric constant ferroelectricity dielectric loss electrostriction See all related content dielectric,insulatingmaterial or a very poorconductorofelectric current. When dielectrics are placed in anelectric field, practically no current flows in them because, unlikemetals, they have no loosely bound, or...
(ε0). The latter is a natural constant and amounts to 8.854 × 10−12F m−1in vacuum.Table 1lists the relative dielectric constants of different materials; it shows that the relative dielectric constant is not a fixed value, but varies according to the temperature and phase of the ...
atTable1.Onthestandpointofdielectricconstant,Dit,andleakage ForthecomparisonofroughnessesforALDRuandPVDRu,wecurrent,theALDRumetalgateshowsbetterdielectricpropertiesthan measuredAFMimagesasshowninFig.2.ThelargecirculargrainsarethePVDRumetalgate.Forthedielectricconstant,thereisthe observedandtherootmeansquare(RMS)...
Dielectric dispersion: This is the variation of the dielectric constant with the frequency of the applied electric field. It occurs because different types of polarization mechanisms have different response times to the changing field. For example, electronic polarization, which involves the displacement ...
- 《Journal of the Japan Institute of Metals》 被引量: 4发表: 2006年 Anodic Oxides of Ta[Single Bond]Al Alloy Films the electrolyte used in this study, the refractive index, dielectric constant, and differential field strength are independent of anodization voltage, and the stoichiometry of ...
Determining oil quality usually requires complex laboratory equipment to measure the viscosity, refractive index, density, base number (BN), acid number (AN), water content, metals (additives and wear metals), color and flash point. However, the dielectric constant is another important indicator of...
(Garget al., 2018). However, high remnant polarization results in a high loss during the energy storage, and the effective dielectric constant will reduce with the increase of the electric field. Some ceramics for example BaTiO3, PbTiO3, etc. are ferroelectric; PVDF is the most well-known...
For example, pure ice has a dielectric constant of 3.2 and loss factor of 0.003 at 0 °C while liquid water at the same temperature has an ε′ of 79 and an ε″ of 21. As can be seen in Figures 1 and 2, the higher the moisture content, more dramatic the change in dielectric ...