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Applied Physics Letters / Volume 96 / Issue 25 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 96, 252506 (2010); doi:10.1063/1.3457478 (3 pages)

Magnetic metal cladding gives better attenuation in small waveguides operating at high microwave frequencies than nonmagnetic metals

K. L. Livesey1,2 and R. E. Camley1

1Centre for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, 1420 Austin Bluffs Parkway, Colorado Springs, Colorado 80918, USA
2School of Physics M013, University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia 6009, Australia

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(Received 10 May 2010; accepted 4 June 2010; published online 25 June 2010)

We calculate the attenuation in microwave waveguides comprising a thin film of dielectric SiO2 sandwiched by copper or iron films. We show that in a frequency range between roughly 63 and 73 GHz, using iron gives lower losses by up to 7.5 dB/cm compared with copper. This is in the region of so-called antiresonance where the effective skin depth of ferromagnetic iron diverges.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

claddings, copper, dielectric thin films, ferromagnetic materials, iron, MIM structures, silicon compounds, waveguides

PACS

  • 84.40.Az

    Waveguides, transmission lines, striplines

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.3457478

PUBLICATION DATA

ISSN:

0003-6951 (print)  
1077-3118 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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