Why superconductors loses property when applying magnetic field?
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When a superconductor is placed in a weak external magnetic filed H, and cooled below its transition temperature, the magnetic filed is ejected .In a perfect conductor, an arbitrarily large current can be induced, and the resulting magnetic filed exactly cancels the applied fild.
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Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. Any material exhibiting these properties is a superconductor.
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