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

doi:10.1088/0953-2048/19/7/S35

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 journal › Article › peer-review

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 language	English
Pages (from-to)	S607-S611
Journal	Superconductor Science and Technology
Volume	19
Issue number	7
DOIs	https://doi.org/10.1088/0953-2048/19/7/S35
Publication status	Published - 2006 Jul 1

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/19/7/S35

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

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.",

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T1 - Contact characteristics of mechanically mated Y-Ba-Cu-O bulks with a deposited metal layer

AU - Fujita, Hiroyuki

AU - Tomita, Masaru

AU - Murakami, Masato

AU - Sakai, Naomichi

AU - Hirabayashi, Izumi

AU - Sawa, Koichiro

PY - 2006/7/1

Y1 - 2006/7/1

N2 - 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.

AB - 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.

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JO - Superconductor Science and Technology

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

Abstract

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