Artificial pinning centres in jelly-roll processed niobium-copper composites.
Author(s) : KITAI T., HIGUCHI M., OSAMURA K.
Type of article: Article
Summary
In order to clarify the mechanism concerning the enhancement of critical-current density due to artificial pinning centres, nanometer scale niobium-copper multilayer composites have been prepared from niobium and copper foils by the jelly-roll process. The layer thickness of the specimen was chosen using a calculation based on the phenomenological Ginzburg-Landau theory. The microstructure of the composite was investigated by scanning electron microscopy. The critical-current density and critical temperature were measured at various magnetic fields. A remarkable increase in the critical-current density was found when the layer thickness was approximately the same scale as the vortex lattice parameter. However, samples with thinner layers showed lower critical-temperature values due to the proximity effect.
Details
- Original title: Artificial pinning centres in jelly-roll processed niobium-copper composites.
- Record ID : 1998-1477
- Languages: English
- Source: Cryogenics - vol. 37 - n. 7
- Publication date: 1997/07
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Indexing
- Themes: Superconduction
- Keywords: Superconduction; Pinning; Copper; Calculation; Multifilamentary superconductor; Superconductor; Niobium; Critical current
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Pinning characteristics in multifilamentary nio...
- Author(s) : MIURA O., MATSUMOTO K., TANAKA Y., YAMAFUJI K., HARADA N., IWAKUMA M., FUNAKI K., MATSUSHITA T.
- Date : 1992
- Languages : English
- Source: Cryogenics - vol. 32 - n. 3
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Critical-current density and pinning behaviour ...
- Author(s) : SUZUKI M., MITSUHASHI S.
- Date : 1993
- Languages : Japanese
- Source: Cryogenics/ Cryog. Eng. - vol. 28 - n. 1
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Critical-current density and pinning behaviour ...
- Author(s) : SUZUKI M., MITSUHASHI S.
- Date : 1993
- Languages : Japanese
- Source: Cryogenics/ Cryog. Eng. - vol. 28 - n. 1
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Critical-current density in superconducting nio...
- Author(s) : OTABE E. S., MATSUSHITA T.
- Date : 1993/05
- Languages : English
- Source: Cryogenics - vol. 33 - n. 5
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Strain characteristics of niobium-tin multifila...
- Author(s) : KATAGIRI K., WATANABE K., SHOJI Y., KOMABAYASHI N., NOTO K., GOTO K., SAITO T., KONO O., OKADA T.
- Date : 1993
- Languages : Japanese
- Source: Cryogenics/ Cryog. Eng. - vol. 28 - n. 8
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