Supergeleiding

Anonymous

Is YtriumBariumKoperOxide een type 1 of een type 2 supergeleider???

Anonymous

Is YtriumBariumKoperOxide een type 1 of een type 2 supergeleider???

Ik neem aan dat je dat zelf ook zo op kan zoeken...

Types I and II Superconductors

There are thirty pure metals which exhibit zero resistivity at low temperatures and have the property of excluding magnetic fields from the interior of the superconductor (Meissner effect). They are called Type I superconductors. The superconductivity exists only below their critical temperatures and below a critical magnetic field strength. Type I superconductors are well described by the BCS theory.

Starting in 1930 with lead-bismuth alloys, a number of alloys were found which exhibited superconductivity; they are called Type II superconductors. They were found to have much higher critical fields and therefore could carry much higher current densities while remaining in the superconducting state.

The variations on barium-copper-oxide ceramics which achieved the superconducting state at much higher temperatures are often just referred to as high temperature superconductors and form a class of their own.

Bron: http://hyperphysics.phy-astr.gsu.edu/hbase...s/scond.html#c4

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