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

T. Imaizumi; K. Sawa; M. Tomita; M. Murakami; N. Sakai; I. Hirabayashi

doi:10.1016/j.physc.2005.03.049

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

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

研究成果: Conference article › 査読

抄録

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.

本文言語	English
ページ（範囲）	815-820
ページ数	6
ジャーナル	Physica C: Superconductivity and its applications
巻	426-431
号	I
DOI	https://doi.org/10.1016/j.physc.2005.03.049
出版ステータス	Published - 2005 10 1
イベント	Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - 継続期間: 2004 11 23 → 2004 11 25

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

文献へのアクセス

10.1016/j.physc.2005.03.049

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引用スタイル

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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.",

keywords = "Contact resistance, Metal deposition, Persistent current switch, YBCO",

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T1 - Electrical contact characteristics of mechanically mated Y-Ba-Cu-O bulks with deposited metal layer

AU - Imaizumi, T.

AU - Sawa, K.

AU - Tomita, M.

AU - Murakami, M.

AU - Sakai, N.

AU - Hirabayashi, I.

PY - 2005/10/1

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N2 - 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.

AB - 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.

KW - Contact resistance

KW - Metal deposition

KW - Persistent current switch

KW - YBCO

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