Abstract

An improved magnetic shielding using the magnetic shaking technique with a planar mesh coil is applied to develop a composite shielding panel of Fe-based amorphous sheet and Si steel sheet. The mesh coil, sandwiched by the two ferromagnetic materials, makes a two-dimensional shaking field that enhances magnetic shielding. The composite panel annealed without field shows exceedingly high longitudinal shielding effectiveness. Fine and circular magnetic domains of amorphous Fe-based ribbons contribute to the magnetic shielding effectiveness for alternating fields at high frequencies.

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