Experimental demonstration of hyperbolic property in conventional material—Ferrite

In this study, we report the experimental demonstration of hyperbolic property in a conventional material—ferrite. The hyperbolic permeability dispersion originates from ferromagnetic resonance. Using 2D-Field mapping system, the negative refraction with a broad bandwidth of 1.5 GHz was observed in...

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Veröffentlicht in:Applied physics letters 2015-11, Vol.107 (21)
Hauptverfasser: Lan, Chuwen, Bi, Ke, Zhou, Ji, Li, Bo
Format: Artikel
Sprache:eng
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Zusammenfassung:In this study, we report the experimental demonstration of hyperbolic property in a conventional material—ferrite. The hyperbolic permeability dispersion originates from ferromagnetic resonance. Using 2D-Field mapping system, the negative refraction with a broad bandwidth of 1.5 GHz was observed in a bulk Ba-Ferrite with no magnetic field applied, therefore confirming the hyperbolic dispersion property. This work also provides an identification of several other similar hyperbolic materials based on permeability changes over a broad range of spectral frequencies.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4936612