Results 281 to 290 of about 135,801 (323)

Theory of Dielectric Relaxation

, 1982
openaire   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Dielectric relaxation time spectroscopy

IEEE Transactions on Biomedical Engineering, 2000
A new mathematical method is developed to recover the permittivity relaxation spectrum of living tissue from measurements of the real and imaginary parts of the impedance. Aiming to derive information about electrical properties of living tissue without the prior selection of any impedance model, the procedure calculates the relaxation time ...
K S, Paulson, S, Jouravleva, C N, McLeod
openaire   +2 more sources

Longitudinal dielectric relaxation

The Journal of Physical Chemistry, 1989
On montre pourquoi pour un declin non exponentiel, des mouvements moleculaires tres rapides sont plus facilement detectables dans la relaxation longitudinale que dans la relaxation transversale, et pourquoi des mouvements oscillatoires tels que librations (oscillations de torsion reliees avec une absorption de Poley) et dipolarons (oscillations d ...
Daniel Kivelson, Harold Friedman
openaire   +1 more source

Dielectric Relaxation in Polycrystalline Ferrites

Physica Status Solidi (a), 1981
The permittivity and conductivity of polycrystalline ferrites with composition Mn0.5Zn0.5Fe2O4 are investigated at temperatures from 20 to 150 °C and at frequencies from 200 Hz to 30 MHz. The dc conductivity shows the properties of the grain boundary surface. The conductivity of the basic material can be obtained at high frequencies.
V. P. Miroshkin, Ya. I. Panova, V. V. Passynkov   +2 more
openaire   +1 more source

Dielectric Relaxation Processes in Ethanol

Nature, 1953
THE existence of secondary regions of dielectric dispersion for a number of polar liquids has been inferred by several workers from radio-frequency and microwave dispersion data, as these extrapolate at high frequencies to values considerably larger than the square of the refractive index.
F X, HASSION, R H, COLE
openaire   +2 more sources

Low-frequency dielectric relaxation in rubber

Physical Review E, 2001
A rubber sample is investigated by dielectric spectroscopy in the frequency range from 10(-2)
Janik, P., Paluch, M., Ziolo, J., Sulkowski, W., Nikiel, L.   +4 more
openaire   +3 more sources

Dielectric relaxation and dielectric fluctuations

Journal of Physics C: Solid State Physics, 1978
The relation between the frequency dependent dielectric constant and the fluctuations in the dielectric polarisation is re-examined from the standpoint of Felderhof's macroscopic theory of electric and magnetic fluctuations. Contributions of the electronic degrees of freedom to the polarisation are included in the formalism; they are treated as an ...
openaire   +1 more source

Dielectric Relaxations in CeO₂

Physica Status Solidi (a), 1984
Dielectric relaxations in CeO2 are observed within the temperature range of 93 to 243 K. There are three relaxations each characterized by a nearly single relaxation time. The activation energies (E) and reciprocal frequency factors (τ0) are found to be 0.17, 0.30, 0.38 eV, and 1.35 × 10−10, 5.01 × 10−13, 1.42 × 10−148, respectively.
A. L. Bhattacharyya, N. Ch. Mitra
openaire   +1 more source

Dielectric Relaxation Spectroscopy

2003
Nowadays dielectric spectroscopy covers the frequency range from 10−6 Hz to 1010 Hz by using computer controlled impedance analyzers [1–10], network analyzers as well as time domain spectrometers [11,12]. At higher frequencies (above 10 GHz) one should use wave-guides, which means that for each frequency a separate apparatus is necessary to perform ...
S. Wróbel, B. Gestblom, J. Jadżyn, P. Kȩdziora, L. Hellemans, A. Würflinger, S. Urban   +6 more
openaire   +1 more source