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Superconductor

Stan Zurek, Superconductor, Encyclopedia Magnetica, E-Magnetica.pl

Superconductor - any material in a state of superconductivity, such that the electrical resistance is zero.1)

Niobium-titanium superconducting cable2) niobium-titanium_superconductor_cern.jpg Copyright © CERN

In a closed loop made from a superconductor, once a DC current is induced it can circulate indefinitely long without dissipation.

Superconductors expel magnetic field to outside of the superconducting volume, thus they behave as perfect diamagnets.

There are two main types of superconductors:3)

  • type I (so-called low-temperature superconductors) - they expel all the magnetic field up to critical temperature or critical field
  • type II (so-called high-temperature superconductors) - they undergo a transition from type I behaviour, to a “mixed” state in which magnetic field can partially penetrate their volue
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Periodic table of superconducting elements4)

See also

References

superconductor.txt · Last modified: 2021/03/27 10:51 by stan_zurek

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