Ni-Fe Alloys as Perspective Materials for Highly Efficient Magnetostatic Shielding

Abstract:

Magnetostatic shields, based on Ni-Fe alloys, were obtained via electrochemistry method with different thickness of partial magnetic layers. The experimental researches of the magnetic properties and magnetostatic shielding effectiveness of the single-layer and malty-layer cylindrical sample of the shields, based on the electrodeposited Ni₈₀Fe₂₀ and Ni₅₀Fe₅₀ alloy, are carried out. It has been shown that the shields of gradient type (200 μm Ni₅₀Fe₅₀+200 μm Ni₈₀Fe₂₀ and 100 μm Ni₅₀Fe₅₀+300 μm Ni₈₀Fe₂₀), containing layers with different values of saturation induction (B_s), have a higher shielding efficiency than shields of symmetric type (400 μm Ni₅₀Fe₅₀ and 400 μm Ni₈₀Fe₂₀). Maximum efficiency of magnetostatic shielding has been noted for 200 μm Ni₅₀Fe₅₀+ 200 μm Ni₈₀Fe₂₀ sample. It opens wide prospects for practical application for protection of the microelectronics devices against permanent magnetic fields.

• Periodical: Materials Science Forum (Volume 946)
• Pages: 205-209
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.946.205
• Online since: February 2019
• Authors: A.A. Solobai*, Alex V. Trukhanov, S.S. Grabchikov
• Keywords: Effectiveness of the Shielding, Electrolytically Deposited Ni-Fe Alloy, Magnetic Materials, Magnetostatic Shielding

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