IEEJ Transactions on Fundamentals and Materials
Online ISSN : 1347-5533
Print ISSN : 0385-4205
ISSN-L : 0385-4205
Assessment of Quench Property of YBCO Superconductor
Katsuhiro FukuokaMitsuo Hashimoto
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1996 Volume 116 Issue 8 Pages 731-737

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Abstract
The YBCO superconductors prepared by the Melt- Powder-Melt-Growth (MPMG) process exhibit high critical current density over 30, 000A/cm2 at 77K and 1T. Because these are expected to be applied to various fields such as magnetic bearing, magnetic levitation, magnetic shielding, and etc. In such applications in order to design applied high-Tc superconductors it is important that assessment methods of magnetic property should be developed. Especially, in real applications it is necessary to assess quench property of the superconductors. So we measured AC quench property of the YBCO ring specimen under the AC magnetic field with the frequency of 50Hz. We got the experimental results that the superconductor results in the quench by the heat under the some AC magnetic field, and that the quench property of ring specimen is ruled by its weak link.
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