CRITICAL CURRENTS OF SUPERCONDUCTING Y-Ba-Cu, Dy-Ba-Cu AND Gd-Ba-Cu OXIDES IN LOW MAGNETIC FIELDS.

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作者
Aomine, Takafumi [1 ]
Tsuru, Kohji [1 ]
机构
[1] Kyushu Univ, Fukuoka, Jpn, Kyushu Univ, Fukuoka, Jpn
关键词
CERAMIC MATERIALS - Magnetic Field Effects - GADOLINIUM COMPOUNDS - Magnetic Field Effects - HYSTERESIS - RARE EARTH COMPOUNDS - Magnetic Field Effects - YTTRIUM COMPOUNDS - Magnetic Field Effects;
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摘要
Critical currents I//c of Y-Ba-Cu-O, Dy-Ba-Cu-O and Gd-Ba-Cu-O systems have been measured in a low magnetic field H above 77 K. For increase and decrease of H, I//c(H) shows hysteresis similar to that in superconducting bridges. The hysteresis in oxide samples is explained by taking into account the inclusion of such superconducting, narrow parts as in bridges.
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页码:2013 / 2014
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