scholarly journals Эффективная диэлектрическая проницаемость композита с эллипсоидальными включениями в матричной оболочке

2021 ◽  
Vol 47 (18) ◽  
pp. 29
Author(s):  
В.И. Пономаренко ◽  
И.М. Лагунов
Keyword(s):  
Dielectric Constant ◽  
Composite Material ◽  
Direct Contact ◽  
Effective Dielectric Constant ◽  
Conductive Fibers ◽  
Experimental Values

A composite material based on ellipsoidal inclusions distributed in a bonding medium is considered. A formula is obtained for calculating the effective dielectric constant of such a material, taking into account the presence of a layer of a binder on the inclusions, which prevents their direct contact. It is shown that the calculated values of the effective dielectric constant correspond to the experimental values for a composite based on sections of conductive fibers.

An Analytical Model for the Effective Dielectric Constant of a 0-3-0 Composite

2010 ◽  
Author(s):  
K. A. Cook-Chennault ◽  
S. Banerjee
Keyword(s):  
Dielectric Constant ◽  
Aspect Ratio ◽  
Analytical Model ◽  
Experimental Results ◽  
Effective Dielectric Constant ◽  
The Third ◽  
Third Phase ◽  
Three Phase ◽  
Phase 0 ◽  
Experimental Values

An analytical expression for prediction of the effective dielectric constant of a three phase 0-3-0 ferroelectric composite is presented. The analytical results are verified with the experimental results from Nan et al [1]. We extend the analytical model, so that the influence of the shape of the third phase inclusion, on the effective dielectric constant of the composite, can be investigated. The results indicate that the dielectric constant increases ∼7 times, when the aspect ratio of the conductive inclusion is increased from 1 (sphere) to 10 (spheroid). The analytical predictions compare favorably with the experimental values.

THE RESONANT BEHAVIOR OF A MULTI-PHASE COMPOSITE MATERIAL

2002 ◽  
Vol 13 (03) ◽  
pp. 405-417
Author(s):  
ALI MOOSAVI ◽  
PERTTI SARKOMAA
Keyword(s):  
Finite Element Method ◽  
Dielectric Constant ◽  
Finite Element ◽  
Composite Material ◽  
Effective Dielectric Constant ◽  
The Finite Element Method ◽  
Resonant Behavior ◽  
Multi Phase ◽  
Square Array ◽  
Element Method

We study the resonant behavior of a system consisting of a square array of multi-coated cylinders by calculating the effective dielectric constant of the system. The results were examined numerically using the finite element method.

An Analytical Model for the Effective Dielectric Constant of a 0-3-0 Composite

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
S. Banerjee ◽  
K. A. Cook-Chennault
Keyword(s):  
Dielectric Constant ◽  
Aspect Ratio ◽  
Analytical Model ◽  
Effective Dielectric Constant ◽  
Inclusion Particle ◽  
Magnetoelectric Composite ◽  
Third Phase ◽  
Three Phase ◽  
Phase 0 ◽  
Experimental Values

An analytical expression for prediction of the effective dielectric constant of a three phase 0-3-0 ferroelectric composite is presented. The analytical results are verified with the experimental results from Nan et al. (2002, “Three-Phase Magnetoelectric Composite of Piezoelectric Ceramics, Rare-Earth Iron Alloys, and Polymer,” Appl. Phys. Lett., 81(20), p. 3831). The analytical model is extended to include the shape of a third phase inclusion to examine the influence of the shape (of the inclusion) on the effective dielectric constant of the composite. The dielectric constant increases as much as seven times when the aspect ratio of the conducting inclusion particle is increased from 1 (sphere) to 10 (spheroid). A comparison of the analytical predictions with the experimental values, which indicate that the increase in aspect ratio of the inclusions has a significant effect on the overall dielectric constant of the composite.

Formulation of Dielectric Behaviour of Composite Material

2013 ◽  
Vol 665 ◽  
pp. 168-171
Author(s):  
Ananya Banerjee ◽  
Aditi Sarkar ◽  
A. Sarkar
Keyword(s):  
Dielectric Constant ◽  
Composite Material ◽  
Magnetic Susceptibility ◽  
Dielectric Function ◽  
Simple Formula ◽  
Dielectric Behavior ◽  
Experimental Result ◽  
Effective Dielectric Constant ◽  
Magnetic Element ◽  
Theoretical Formulation

A simple formula for effective dielectric constant of composite material or DMD is proposed. In case of magnetic element in the composite the effect of magnetic susceptibility is taken into account to describe the dielectric behavior. A theoretical formulation of the proposed dielectric function along with an experimental result is presented here. The overall results are found to be good and consistent .

Measurement of effective dielectric constant : A comparison

2011 ◽  
Author(s):  
Aakashdeep ◽  
Saurav Kr. Basu ◽  
G. V. Ujjwal ◽  
Sakshi Kumari ◽  
V. R. Gupta
Keyword(s):  
Dielectric Constant ◽  
Effective Dielectric Constant

Contributions to Silicon-Hydrogen Bond-Stretching Frequency in Amorphous Si Alloys

1992 ◽  
Vol 258 ◽  
Author(s):  
Z. Jing ◽  
J. L. Whitten ◽  
G. Lucovsky
Keyword(s):  
Experimental Data ◽  
Hydrogen Bond ◽  
Dielectric Constant ◽  
Ab Initio ◽  
Effective Dielectric Constant ◽  
Bond Energies ◽  
Calculated Frequency ◽  
Bond Stretching ◽  
Amorphous Si ◽  
Good Agreement

ABSTRACTWe have performed ab initio calculations and determined the bond-energies and vibrational frequencies of Si-H groups that are: i) attached to Si-atoms as their immediate, and also more distant neighbors; and ii) attached to three O-atoms as their immediate neighbors, but are connected to an all Si-atom matrix. These arrangements simulate bonding geometries on Si surfaces, and the calculated frequency for i) is in good agreement with that of an Si-H group on an Si surface. To compare these results with a-Si:H alloys it is necessary to take into account an additional factor: the effective dielectric constant of the host. We show how to do this, demonstrating the way results of the ab initio calculations should then be compared with experimental data.

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