Permittivity Model for Ferromagnetic Nanowired Substrates

Author

Spiegel, Judith ; De La Torre, Joaquìn ; Darques, Michaël ; Piraux, Luc ; Huynen, Isabelle

Author_Institution

Univ. Catholique de Louvain, Louvain-la-Neuve

Volume

17

Issue

7

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

492

Lastpage

494

Abstract

This letter presents the influence of ferromagnetic nanowires on permittivity and losses on a so-filled membrane. For this purpose a theoretical permittivity model has been developed by considering geometrical parameters of the substrate such as the porosity of the membrane and the height of the nanowires. It has been validated by microstrip line measurements on a composite substrate filled with cobalt nanowires. The ferromagnetic nanowires enhance the permittivity, but give no further contribution to the losses beyond the ferromagnetic resonance. This is confirmed by measurements on a similar topology including non ferromagnetic copper nanowires.

Keywords

ferromagnetic materials; microstrip lines; nanowires; permittivity; cobalt nanowires; composite substrate; ferromagnetic nanowired substrates; ferromagnetic resonance; microstrip line measurements; permittivity model; polycarbonate template; Biomembranes; Cobalt; Copper; Dielectric substrates; Frequency; Magnetic materials; Microstrip; Nanowires; Permittivity measurement; Wire; Artificial material; ferromagnetic nanowire; losses; permittivity; polycarbonate template;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2007.899303

Filename

4266850