On the feasibility of using ferromagnetic materials for thin em absorbers
2007 (English)In: 2007 International Conference on Electromagnetics in Advanced Applications, ICEAA'07, 2007, 324-327 p.Conference paper (Refereed)
In this paper the magnetization of a ferro- or ferri-magnetic material has been modeled with the Landau-Lifshitz-Gilbert (LLG) equation. We show that with the aid of a static magnetic bias field the material can be switched between a Lorentz-like material with a resonance frequency and a material exhibiting a magnetic conductivity. The reflection from a magnetic material backed by a perfect electrical conductor (PEC) is then analyzed. It is found that one can achieve low reflection (around -20 dB) for a quite large bandwidth (more than two decades).
Place, publisher, year, edition, pages
2007. 324-327 p.
Electromagnetism, Ferromagnetic materials, Ferromagnetism, Magnetic devices, Magnetism, Reflection, Resonance
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-155240DOI: 10.1109/ICEAA.2007.4387303ScopusID: 2-s2.0-47349103291ISBN: 1424407672ISBN: 978-142440767-5OAI: oai:DiVA.org:kth-155240DiVA: diva2:761543
2007 International Conference on Electromagnetics in Advanced Applications, ICEAA'07, 17 September 2007 through 21 September 2007, Torino, Italy
QC 201411072014-11-072014-11-042014-11-07Bibliographically approved