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 |
|---|---|
| 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 |
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Keywords
- Contact resistance
- Persistent current switch
- Transfer current
- YBCO
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Contact characteristics for YBCO bulk superconductors. / Yamamoto, Naoki; Sakai, Tomokazu; Sawa, Koichiro; Tomita, Masaru; Murakami, Masato.
In: Physica C: Superconductivity and its Applications, Vol. 392-396, No. PART 1, 10.2003, p. 729-733.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Contact characteristics for YBCO bulk superconductors
AU - Yamamoto, Naoki
AU - Sakai, Tomokazu
AU - Sawa, Koichiro
AU - Tomita, Masaru
AU - Murakami, Masato
PY - 2003/10
Y1 - 2003/10
N2 - 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.
AB - 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.
KW - Contact resistance
KW - Persistent current switch
KW - Transfer current
KW - YBCO
UR - http://www.scopus.com/inward/record.url?scp=0042784768&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0042784768&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(03)01012-8
DO - 10.1016/S0921-4534(03)01012-8
M3 - Article
VL - 392-396
SP - 729
EP - 733
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 1
ER -