It is shown that for isotropic and for cubic materials there are three factors contributing to the temperature dependence of a dielectric constant: a direct volume expansion effect and the influences of volume
In fact, it is found that the isobaric temperature dependence of the dielectric constant is dominated by the pure temperature dependence of the molecular polarizability. The pure volume dependence of the polarizability, on the other hand, is relatively small as is perhaps typical of most molecular ...
temperature functionsmectic A-smectic G transitiontilted-orthogonal transitionquadrupole-quadrupole interactionsThe temperature dependence of the dielectric constant is studied under some fixed electric fields for the smectic G- (tilted-) smectic A (orthogonal) transition of the ferroelectric liquid crystal ...
Dielectric constant in the incommensurate phase of NHHSeOunder electric fieldThe temperature dependence of the dielectric constant has been measured in NHHSeOcrystal at bias electric field. It is shown that the temperature of phase transition from the incommensurate to the commensurate phases depends ...
temperature dependenceThe dielectric parameters such as dielectric constant ( ε′), dielectric loss ( ε″), dielectric loss tangent (tan δ ) and the ac conductivity ( σ ac) of Se90Ge10 – x In x (where x = 2, 4 and 6 at%) thin films have been studied as a function of ...
The temperature dependence of optical constants of titanium nitride thin film is investigated using Spectroscopic Ellipsometry (SE) between 1.4 and 5 eV in the temperature range of 300K to 650K in steps of 50K. The real and imaginary parts of the dielectric functions ε1(E) and ε2(E) margi...
temperaturedependenceDielectric composites made using P(VDF-CTFE) 88/12 mol% as polymer matrix and both micro-sized and nano-sized CaCu3Ti4O12 (CCTO) particles as filler are developed. These composites exhibit high dielectric constant with a small dielectric loss. More importantly, it is found ...
At each moisture level, 20 g potato starch was placed in the temperature-controlled stainless steel cylindrical sample holder, which was placed in the constant temperature water bath. The temperature meter was inserted into the center of potato starch to monitor sample temperature. The water bath...
aFigure 1 shows a temperature (T) dependence of the dielectric constant (er) at 10 kHz.Pure SrTiO3 shows a typical quantum paraelectric behavior, er is high but almost temperature independent at low temperatures. 正在翻译,请等待...[translate]...
In parallel, the temperature dependence of dielectric permittivity of BNT has been shown to exhibit a dielectric peak usually found to occur around600≤Tm≤650K, where there exists however no evidence of structural transformation taking place, albeit report of some phases coexistence18, as commented...