Superconductor levitation.
[In Japanese. / En japonais.]
Author(s) : MURAKAMI M.
Type of article: Article
Summary
In the article, the mechanism of stable levitation by bulk high-temperature superconductors is presented. Superconductor levitation is fascinating and thus displayed in various demonstration. In general, superconductor levitation is explained in terms of the Meissner effect, which is not applicable in the case of levitating a permanent magnet by Y-Ba-Cu-O cooled with liquid nitrogen. For stable levitation in free space, the restoring forces must act on the levitated object in three rectangular directions, which cannot be fulfilled by simple diamagnetic levitation like that found with the Meissner effect. A pinning effect that fixes quantized fluxoids is the source of such restoring forces, and therefore, superconductor levitation is stabilized by flux pinning.
Details
- Original title: [In Japanese. / En japonais.]
- Record ID : 2008-1182
- Languages: Japanese
- Source: Journal of the Cryogenic Society of Japan - vol. 42 - n. 12
- Publication date: 2007
Links
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Indexing
- Themes: Other applications of cryogenic temperatures
- Keywords: YBCO; Superconductor; Levitation; Cryogenics
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- Author(s) : LEE H., TSUDA H., IWASA Y.
- Date : 1998/04
- Languages : English
- Source: Cryogenics - vol. 38 - n. 4
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- Languages : English
- Source: Cryogenics - vol. 37 - n. 12
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- Source: Cryogenics/ Cryog. Eng. - vol. 32 - n. 8
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Controlled levitation of YBCO bulk superconduct...
- Author(s) : NAGASHIMA K., IWASA Y., SAWA K., et al.
- Date : 1999/11
- Languages : Japanese
- Source: Cryogenics/ Cryog. Eng. - vol. 34 - n. 11
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Experimental investigations on dynamic stabilit...
- Author(s) : WEN Z., LIU Y., QIU M., et al.
- Date : 2006/07/17
- Languages : English
- Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
- Formats : PDF
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