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Observation of negative refraction in the graphene/ferrite composite
Author(s) -
Oganisian Karen,
Strek Wieslaw
Publication year - 2014
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201409435
Subject(s) - negative refraction , refractive index , permittivity , graphene , ferrite (magnet) , barium ferrite , materials science , composite number , refraction , condensed matter physics , permeability (electromagnetism) , left handed , inductance , optics , dielectric , physics , composite material , chemistry , optoelectronics , nanotechnology , biochemistry , quantum mechanics , voltage , membrane
An observation of negative refraction in the naturally obtained composition of graphene and barium ferrite is reported. The capacitance and inductance measurements revealed the electric and magnetic resonances accompanied with the negative values of permittivity and permeability in the overlapped frequency range. According to the “left‐handed” media approach such a material is characterized by negative refraction. The derived values of the real part of refractive index are negative at the frequencies above 500 MHz.(© 2014 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)