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13 June 1997 Dispersion dependencies of dielectric properties: renormgroup approach
Vitaly V. Novikov, Oleg P. Poznansky
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Proceedings Volume 3181, Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications; (1997) https://doi.org/10.1117/12.276271
Event: Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications, 1996, Szczyrk, Poland
Abstract
The ac dielectric response of metal-insulator composites is studied numerically, using renormgroup's algorithm. For 2D and 3D random composites with bond percolation, we verify numerically that the effective dielectric function can be written numerically. A similar form has been previously verified by Bug et al. We have used a random resistor - capacitor network as a representation of a metal-insulator composite near the percolation threshold, and have calculated the scaling function using a real-space renormalization-group approach. The main idea of such approach consists of step-by-step averaging on levels of hierarchical lettice. This process is continued to fixed point of dielectric's concentration. We are finding the concentration dependencies of effective characteristics of composite material for different initial concentration of dielectric in spread range of frequencies.
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Vitaly V. Novikov and Oleg P. Poznansky "Dispersion dependencies of dielectric properties: renormgroup approach", Proc. SPIE 3181, Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications, (13 June 1997); https://doi.org/10.1117/12.276271
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KEYWORDS
Dielectrics
Composites
Capacitors
Resistors
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