please help
2007-04-11 11:32:32 · 4 answers · asked by ben A 1 in Science & Mathematics ➔ Physics
A superconductor (when in its superconducting phase) expels all magnetic fields... up to a point. Above this critical level the magnetic field destroys the superconducting phase...
http://www.superconductors.org/INdex.htm has more information or try wikipedia
2007-04-11 11:48:07 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Yes. A super conductor! A super conductor is a perfect diamagnet, meaning it shields or expels magnet fileds. However, not that if the magnet field is stronger than some critical limit it will overcome or destroy the super conducting state.
2007-04-11 18:37:55 · answer #2 · answered by Scott H 3 · 0⤊ 0⤋
"mu" metal. It is a nickel-iron alloy that has one of the highest relative permeabilities of any metal. It is used for magnetic shielding.
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2007-04-11 18:37:56 · answer #3 · answered by tlbs101 7 · 0⤊ 0⤋
i think aluminium is also weakly diamagnetic
2007-04-11 18:44:39 · answer #4 · answered by Plz_Tell_Me 3 · 0⤊ 0⤋