NDLI: A numerical method for the calculation of dielectric nanocomposites

Content Provider	IEEE Xplore Digital Library
Author	Kühn, M. Kliem, H.
Copyright Year	1994
Abstract	Numerical simulations of the properties of dielectric nanocomposites using local field calculations are performed. Thus the dipole-dipole interactions and interactions between the dipoles and the electrodes are considered. The simulations are based on the microscopic local field method and a dynamic Monte Carlo algorithm. In the context of dielectric binary mixtures no analytic solution exists for a given microstructure. Such a problem can only be solved numerically. The approximations for such a system using macroscopic mixing rules can be misleading. We compare the results obtained by the local field method to the classical mixing rules of Maxwell-Garnett and Polder-van Santen. In the context of a polar guest phase in a non-polar host phase the impact of the nanodielectric inclusion modeled by permanent dipoles into the host matrix is investigated. For a two phase system with polar and non-polar units we simulate all interactions and investigate the ferroelectric hysteresis. The ferroelectric hysteresis is observed for the modeled P(VDF/TrFE) structure with dielectric layers on both sides. We will see that many effects which are unique for a given microstructure can not be observed by the application of a strategy of homogenization which is the case for all empirical mixing rules.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
File Size	817820
File Format	PDF
ISSN	10709878
Volume Number	17
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectrics Mathematical model Electric fields Permittivity Lattices Nanocomposites Microstructure host phase, guest phase, mixing rules, method of image dipoles, electrode effects Local field, computational materials science, dielectric polarization dielectric susceptibility, dielectric permittivity, induced dipoles, permanent dipoles dipole-dipole interaction, dielectric nanocomposites, polar inclusions, binary mixture
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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