Large grained YBCO monoliths for magnetic bearings of a LH2 tank

被引：0
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作者：
Ullrich, M
Leenders, A
Freyhardt, HC
Albering, JH
Gauss, S
机构：
[1] Zentrum Funkt Werkstoffe GGMBH Gottingen, D-37073 Gottingen, Germany
[2] Univ Gottingen, Inst Met Phys, D-37073 Gottingen, Germany
[3] Hoechst AG, D-65926 Frankfurt, Germany
来源：
APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2: VOL 1: SMALL SCALE AND ELECTRONIC APPLICATIONS; VOL 2: LARGE SCALE AND POWER APPLICATIONS | 1997年 / 158期
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中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
YBCO monoliths used in a PM/SC arrangement of a magnetic bearing of a cryogenic LH2 vessel were melt-textured by VGF, MTG and TSMG methods. The differences in j(c) between large-grained and single-domain samples decreases strongly with decreasing temperature. It seems that at a distinct temperature weak links due to grain boundaries become ineffective leading to a strong increase of the measured magnetic moment of the large-grained samples. Simultaneously, the measured levitation forces of the large-grained samples strongly increase with decreasing temperature. At low temperatures the levitation forces of large-grained and single-domain samples are nearly identical.
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页码：1033 / 1036
页数：4
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