Abstract

The shielding of a polarized electromagnetic pulse by a ferromagnetic thin film is calculated in the case where the magnetization is perpendicular to the incident field's polarization. The effects of anisotropy, domain interaction, saturation, hysteresis, and magnetization response time are considered. Results show that best shielding occurs when the response time of the ferromagnetic film is the inverse of the rise time of the pulse. At its optimum frequency, a ferromagnetic alloy shields better than a copper film of the same thickness.

Notes

Originally published in Journal of Applied Physics 65, 2803 (1989). DOI:10.1063/1.342743 (http://dx.doi.org/10.1063/1.342743).

Keywords

domain interaction, saturation, copper films, ferromagnetic alloy

Subject Categories

Thin films, Ferromagnetism, Magnetization, Electromagnetic pulse, Anisotropy, Hysteresis

Disciplines

Electromagnetics and photonics

Publisher

American Institute of Physics

Publication Date

4-1-1989

Rights Information

Copyright 1989 American Institute of Physics.

Rights Holder

American Institute of Physics

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