Mu-metal
Nickel-iron alloy with high magnetic permeability
Mu-metal
Mu-metal, or μ-metal, is a soft nickel–iron ferromagnetic alloy with very high permeability. It is used for shielding sensitive electronic equipment against static or low-frequency magnetic fields. The name came from the Greek letter mu (μ, ( ), which represents permeability in physics and engineering formulas.
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