Electrical contact characteristics of mechanically mated Y-Ba-Cu-O bulks with deposited metal layer

T. Imaizumi, K. Sawa, M. Tomita, Masato Murakami, Naomichi Sakai, I. Hirabayashi

Research output: Contribution to journalArticle

Abstract

We have measured contact resistances between two bulk YBCO superconductor blocks with the application to a persistent current switch (PCS) in mind. In order to reduce a contact resistance, we deposited indium and silver on the sample surfaces. The resistance was reduced by increasing the thickness of the deposited metal layers, but it saturated when the thickness reached a certain level. The saturation thickness was much smaller in indium than silver. Such a difference is understandable by considering the hardness of these two metals. The resistance was also reduced by increasing the mechanical load. Overloading however caused the coupling of metal layers, resulting in the peeling off of the deposited layers when the switch was opened.

Original languageEnglish
Pages (from-to)815-820
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1

Fingerprint

electric contacts
Indium
Metals
Contact resistance
contact resistance
Silver
indium
switches
silver
Switches
metals
YBCO superconductors
peeling
Peeling
Superconducting materials
hardness
Hardness
saturation

Keywords

  • Contact resistance
  • Metal deposition
  • Persistent current switch
  • YBCO

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Electrical contact characteristics of mechanically mated Y-Ba-Cu-O bulks with deposited metal layer. / Imaizumi, T.; Sawa, K.; Tomita, M.; Murakami, Masato; Sakai, Naomichi; Hirabayashi, I.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 815-820.

Research output: Contribution to journalArticle

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