Contact characteristics of mechanically mated Y-Ba-Cu-O bulks with a deposited metal layer

Hiroyuki Fujita, Masaru Tomita, Masato Murakami, Naomichi Sakai, Izumi Hirabayashi, Koichiro Sawa

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We measured the contact resistance of a silver block with convex curvature and silver, a melt-textured Y-Ba-Cu-O sample (YBCO), and a silver-deposited YBCO sample (dAg/YBCO) to clarify the main source of the resistance. The study was performed with the development of a persistent current switch in mind. The contact resistance was largest in the Ag/YBCO contact. It decreased by increasing the thickness of the deposited-Ag layer for the Ag/dAg/YBCO contact. However, the smallest resistance of the Ag/dAg/YBCO contact was even larger than that of the Ag/Ag contact. This is probably due to the fact that the Ag/dAg/YBCO contact has two interfaces. The present result suggests that the contact area is dominant in controlling the contact resistance. A simulation study of the contact area with a finite element method (FEM) also supported this idea.

Original languageEnglish
JournalSuperconductor Science and Technology
Volume19
Issue number7
DOIs
Publication statusPublished - 2006 Jul

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Contact resistance
Silver
Metals
metals
contact resistance
silver
Switches
Finite element method
finite element method
switches
curvature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Contact characteristics of mechanically mated Y-Ba-Cu-O bulks with a deposited metal layer. / Fujita, Hiroyuki; Tomita, Masaru; Murakami, Masato; Sakai, Naomichi; Hirabayashi, Izumi; Sawa, Koichiro.

In: Superconductor Science and Technology, Vol. 19, No. 7, 07.2006.

Research output: Contribution to journalArticle

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AU - Hirabayashi, Izumi

AU - Sawa, Koichiro

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