Abstract
We have studied the contact characteristics of two resin-impregnated YBCO (a composite of YBa2Cu3Oy and Y 2BaCuO5) bulk superconductors in mechanical contact. A switching phenomenon could be observed at a threshold current or a transfer current value in the V-I curves of the YBCO contact. The transfer current exceeded the previous value of 13.5 A at 77 K in the contact when the sample surfaces were carefully polished. The present results suggest that a pair of YBCO blocks might be applicable to the mechanical persistent current switch for superconducting magnetic energy storage and other superconducting systems run in a persistent current mode.
Original language | English |
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Pages (from-to) | 729-733 |
Number of pages | 5 |
Journal | Physica C: Superconductivity and its applications |
Volume | 392-396 |
Issue number | PART 1 |
DOIs | |
Publication status | Published - 2003 Oct |
Externally published | Yes |
Event | Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13 |
Keywords
- Contact resistance
- Persistent current switch
- Transfer current
- YBCO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering