Observation of magnetic field lines in the vicinity of a superconductor with the naked eye

Details Observation of magnetic field lines in the vicinity of a superconductor with the naked eye Observation of magnetic field lines in the vicinity of a superconductor with the naked eye

2008-05-26

arxiv.org/abs/0805.3990v4

Physics

Physics Education

14 pages, 13 figures http://www.sci-museum.kita.osaka.jp/~saito/superconduct.html

Scientific paper

Meissner effect and pinning effect are clearly observed with the naked eye. A GdBaCuO high-temperature superconductor (HTS) disk fabricated by Nippon Steel Corporation, a 100mm cubic NdFeB sintered magnet, and iron wires coated by colored are used. When the HTS is put in the magnetic field of the magnet, it can be observed by the wires that the magnetic field lines are excluded from the superconductor (Meissner effect) as well as are pinned in the superconductor (pinning effect).

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