https://doi.org/10.1140/epjb/e2009-00134-3
Possible negative refraction in two dimensional ferromagnetic wire lattice
1
TUBITAK - UEKAE, 41470 Gebze, Kocaeli, Turkey
2
Gebze Institute of Technology, Department of Physics, 41400 Cayirova-Gebze, Kocaeli, Turkey
Corresponding author: a ekremd@uekae.tubitak.gov.tr
Received:
23
October
2008
Revised:
2
March
2009
Published online:
15
April
2009
In this paper, we present theoretical and experimental results for the indication of negative refraction in ferromagnetic metallic wire lattice. We have studied microwave transmission through a two dimensional wire lattice made of ferromagnetic metallic wires under the applied static magnetic field. We have found that, the microwave transmission were significantly changed at ferromagnetic resonance frequency region. Thus the magnetic permeability can be tuned by external dc magnetic field. Since the dielectric permittivity of metallic wire lattice is negative and can take a value close to unity then the crystal exhibits negative index of refraction at microwave region under the external magnetic field.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 78.20.Ci – Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
