Calculation of Electromagnetic Constitutive Parameters of Insulating Magnetic Materials with Conducting Inclusions

Autor:	Rick L. Moore, Paul R. Kemper, Eric Kuster, Lisa M. Lust
Rok vydání:	1995
Předmět:	Permittivity Vacuum permittivity Materials science Condensed matter physics Permeability (electromagnetism) Composite number Physics::Optics Relative permittivity Percolation threshold Dielectric Physics::Classical Physics Thermal conduction
Zdroj:	MRS Proceedings. 408
ISSN:	1946-4274 0272-9172
DOI:	10.1557/proc-408-527
Popis:	A Method of Moments (MoM) electromagnetic model of percolating conducting films was applied to calculate the effective parameters of the composite formed by conducting inclusions placed within a dispersive magnetic but nondispersive dielectric matrix. The MoM calculations demonstrate a coupling between the magnetic properties of the matrix and the effective composite permittivity and frequency dispersion of the composite. The coupling of permittivity and permeability is observed near the percolation threshold of the composite and for high conductivity inclusions. The prediction agrees with physical expectations since near percolation the conduction correlation length dominates the effective permittivity of the composite and this correlation length is determined by both the permittivity and permeability of the composite.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39f9c7bee57aef5afa7870fcad2b9dcc https://doi.org/10.1557/proc-408-527 Zobrazit plný text záznamu Full text from SpringerLink