Contact characteristics for YBCO bulk superconductors

Naoki Yamamoto, Tomokazu Sakai, Koichiro Sawa, Masaru Tomita, Masato Murakami

Research output: Contribution to journalArticle

9 Citations (Scopus)

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 languageEnglish
Pages (from-to)729-733
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Fingerprint

Energy storage
Superconducting materials
Resins
Switches
Composite materials
magnetic energy storage
threshold currents
resins
switches
composite materials
curves

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 journalArticle

Yamamoto, Naoki ; Sakai, Tomokazu ; Sawa, Koichiro ; Tomita, Masaru ; Murakami, Masato. / Contact characteristics for YBCO bulk superconductors. In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 392-396, No. PART 1. pp. 729-733.
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