Is there ever a time at which a small magnetic field can eventually saturate magnetic shielding of very high quality such as MuMetal? Or can magnetic shielding block the magnetic field indefinitely? Would layers help?
2007-01-30 15:29:07 · 4 answers · asked by What_a_what 2 in Science & Mathematics ➔ Physics
materials like mu-metal have very high magnetic permeability;
but they will eventually saturate if you apply a sufficiently high external field.
If the external field is low, the mu-metal doesn't saturate. The shielding action will last indefinitely, as long as the shielding doesn't degrade or break
the use of multiple layers can increase the shielding factor, considerably
2007-01-30 15:43:00 · answer #1 · answered by Thor2007 2 · 1⤊ 0⤋
A magnetic shield redirects and concentrates the field within the shield - preventing the field from adversely effecting any components or wiring outside of the shield. The shield will do this indefinitely.
2007-01-31 00:35:49 · answer #2 · answered by LeAnne 7 · 0⤊ 0⤋
According to this manufacturer, mu-metal saturates at a field of 0.8 Tesla (or 8000 Gauss)
2007-01-31 09:43:10 · answer #3 · answered by genericman1998 5 · 0⤊ 0⤋
1.Not generally, if weak. 2.Yes. 3. Yes, if 50% out of phase(otherwise the field will go through both overlapping holes).
2007-01-30 23:46:38 · answer #4 · answered by CLICKHEREx 5 · 0⤊ 0⤋