Low Losses Left Handed Materials Using Metallic Magnetic Cylinders

TL;DR

This paper demonstrates that arrays of metallic magnetic cylinders near ferromagnetic resonance can act as low-loss left-handed materials with negative refraction at microwave frequencies, confirmed through extensive numerical simulations.

Contribution

It introduces a novel design of metallic magnetic cylinder arrays that achieve negative refraction with minimal losses, validated by comprehensive FDTD simulations.

Findings

Arrays of ferromagnetic cylinders exhibit negative refraction.

Optimal configurations yield near-zero losses.

Simulations confirm practical transmitivity close to unity.

Abstract

We discuss materials based on arrays of metallic magnetic cylindrical structures near ferromagnetic resonance with applied magnetic fields at microwave frequencies. We have found that the materials have a negative refraction index when the appropriate structure is chosen. Numerical FDTD simulations were performed, after a very large number of geometries were swept. The simulations reveal that only ferromagnetic cylinders, with diameters of 0.1 cm and 0.5 cm apart, and with periodic or random configurations, are left-handed materials with very small losses; i.e. with transmitivity practically unity or no losses.