High-frequency dielectric constant of water and determination of the Kirkwood correlation factor

1987 ◽  
Vol 27 (5) ◽  
pp. 731-736 ◽  
Author(s):  
O. A. Nabokov ◽  
Yu. A. Lyubimov
Keyword(s):  
Dielectric Constant ◽  
High Frequency ◽  
Correlation Factor ◽  
High Frequency Dielectric Constant ◽  
Kirkwood Correlation Factor

scholarly journals Configurational Statistics

1978 ◽  
Vol 21 (85) ◽  
pp. 73-83 ◽  
Author(s):  
J. F. Nagle
Keyword(s):  
Dielectric Constant ◽  
Long Range ◽  
Short Range ◽  
Theoretical Calculations ◽  
Correlation Factor ◽  
Residual Entropy ◽  
Dipolar Interactions ◽  
Computational Tool ◽  
Kirkwood Correlation Factor ◽  
Polarization Factor

Abstract Theories of the dielectric constant in ice differ in three fundamentally different ways that are often confused with each other. First, there is the choice of interactions to include in the model, notably whether to try to include long-range dipolar interactions as in the Kirkwood theory or to include only the short-range ice-rule interactions. Second, there is the choice of the kind of statistical quantity calculated, e.g. the Kirkwood correlation factor g or the polarization factor G, which Stillinger and Cotter showed to be different. Finally, there is the choice of the kind of computational tool used, and in original papers this choice often obscures the first two differences. With these distinctions in mind a review is given of current theoretical calculations of the dielectric constant and the residual entropy and how the different theories relate to each other and to experiments.

DIELECTRIC EVIDENCE FOR ACETONE HYDRATE

1963 ◽  
Vol 41 (2) ◽  
pp. 264-273 ◽  
Author(s):  
G. J. Wilson ◽  
D. W. Davidson
Keyword(s):  
Activation Energy ◽  
Dielectric Constant ◽  
High Frequency ◽  
Water System ◽  
Low Frequency ◽  
Water Molecules ◽  
Incongruent Melting ◽  
High Frequency Dielectric Constant ◽  
System A ◽  
Acetone Water

The phase diagram of the acetone–water system shows that acetone hydrate decomposes at an incongruent melting point. The existence of acetone hydrate is confirmed by a study of the low-frequency dielectric properties of this system. A dispersion region, related to the relaxation of water molecules in the clathrate structure, is characterized by a "static" dielectric constant and an activation energy about half as large as the corresponding values for ice, and by a limiting high-frequency dielectric constant of about 7 at 200° K. The magnitude of the latter is attributed to orientation of acetone molecules within the larger cavities of the hydrate structure.

High-frequency dielectric constant of layered Fe, Co, and Ni dihalides

1984 ◽  
Vol 29 (6) ◽  
pp. 3617-3622 ◽  
Author(s):  
I. Pollini ◽  
G. Benedek ◽  
J. Thomas
Keyword(s):  
Dielectric Constant ◽  
High Frequency ◽  
High Frequency Dielectric Constant

scholarly journals Dielectric properties of benzylamine in 1,2,6-hexanetriol mixture using time domain reflectometry technique

2016 ◽  
Vol 06 (04) ◽  
pp. 1650034
Author(s):  
M. B. Swami ◽  
P. G. Hudge ◽  
V. P. Pawar
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Binary Mixtures ◽  
Time Domain ◽  
Complex Permittivity ◽  
Intramolecular Interaction ◽  
Correlation Factor ◽  
Time Domain Reflectometry ◽  
Least Square ◽  
Kirkwood Correlation Factor

The dielectric properties of binary mixtures of benzylamine-1,2,6-hexantriol mixtures at different volume fractions of 1,2,6-hexanetriol have been measured using Time Domain Reflectometry (TDR) technique in the frequency range of 10 MHz to 30 GHz. Complex permittivity spectra were fitted using Havriliak–Negami equation. By using least square fit method the dielectric parameters such as static dielectric constant ([Formula: see text]), dielectric constant at high frequency ([Formula: see text]), relaxation time [Formula: see text] (ps) and relaxation distribution parameter ([Formula: see text]) were extracted from complex permittivity spectra at 25[Formula: see text]C. The intramolecular interaction of different molecules has been discussed using the Kirkwood correlation factor, Bruggeman factor. The Kirkwood correlation factor ([Formula: see text]) and effective Kirkwood correlation factor ([Formula: see text]) indicate the dipole ordering of the binary mixtures.

Pool-Frenkel effect and high frequency dielectric constant determination of semiconducting P2O5-Li2MoO4-Li2O and P2O5-Na2MoO4-Na2O bulk glasses

Open Physics ◽  
2008 ◽  
Vol 6 (2) ◽  
Author(s):  
Dariush Souri ◽  
Mohammad Elahi ◽  
Mohammad Yazdanpanah
Keyword(s):  
Dielectric Constant ◽  
Electric Field ◽  
Electric Fields ◽  
Threshold Voltage ◽  
High Frequency ◽  
Strong Electric Field ◽  
Nonlinear Effects ◽  
High Frequency Dielectric Constant ◽  
Conduction State ◽  
Current Voltage

AbstractThe ternary 70P2O5-10Li2MoO4-20Li2O and 70P2O5-10Na2MoO4-20Na2O glasses, prepared by the press-melt quenching technique, were studied at temperatures between 298 and 418 K for their high dc electric field properties. For the above purpose, the effect of a strong electric field on the dc conduction of these amorphous bulk samples was investigated using the gap-type electrode configuration. At low electric fields, the current-voltage (I — V) characteristics have a linear shape, while at high electric fields (> 103 V/cm), bulk samples show nonlinear effects (nonohmic conduction). Current-voltage curves show increasing departure from Ohm’s law with increasing current density, leading to critical phenomena at a maximum voltage (threshold voltage), known as switching (switch from a low-conduction state to a higher-conduction state at threshold voltage). The Pool-Frenkel high-field effect was observed at electrical fields of about 103–104 V/cm; then the lowering factor of the potential barrier, the high frequency dielectric constant, and the refractive index of these glasses were determined.

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