Fe-based ferromagnetic microwires enabled meta-composites

Yang Luo, Hua‐Xin Peng, Faxiang Qin, M. Ipatov, V. Zhukova, J. González

Applied Physics Letters · 2013 · 46 citations · 32 references

Concepts

Abstract

The microwave properties of polymer-based glass fiber reinforced composites containing amorphous Fe77Si10B10C3 microwires in parallel and orthogonal arrays and their dependencies on external magnetic field have been investigated. Double-negative-index characteristics are confirmed for both wire arrays through the observed transmission window in the 1–7 GHz frequency band. The microwave interaction within inter-wire range is responsible for a multi-peak feature observed in the absorption spectra of the parallel wire array composite when the wire spacing is below 7 mm. We introduce the term of “effective diameter” associated with the microwire domain structure to remedy the discrepancy between the computed and experimentally observed plasma frequency.

References

32