Effective magnetic properties of a composite material with circular conductive elements
Department of Physics, University of Osnabrück, 49069 Osnabrück, Germany
2 Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
Corresponding author: a firstname.lastname@example.org
Published online: 31 July 2002
Effective magnetic properties of a composite meta-material consisting of periodically arranged circular conductive elements are studied theoretically. A general expression for the effective bulk permeability is obtained with mutual effects and lattice ordering being taken into account. The resonance frequency of the permeability is found to be strongly dependent on the size and shape of the unit cell. Frequency dispersion of the permeability is studied with special attention paid to the frequency range, where negative values of the permeability are possible. Corresponding recommendations for optimisation of the meta-materials with negative permeability are made. The results are confirmed by numerical simulations of the finite structure behaviour in an external magnetic field.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 78.20.Bh – Theory, models, and numerical simulation
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002