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 language | English |
|---|---|
| Pages (from-to) | 815-820 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 426-431 |
| Issue number | I |
| DOIs | |
| Publication status | Published - 2005 Oct 1 |
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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 journal › Article
}
TY - JOUR
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, Masato
AU - Sakai, Naomichi
AU - Hirabayashi, I.
PY - 2005/10/1
Y1 - 2005/10/1
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
UR - http://www.scopus.com/inward/record.url?scp=25644439913&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=25644439913&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2005.03.049
DO - 10.1016/j.physc.2005.03.049
M3 - Article
AN - SCOPUS:25644439913
VL - 426-431
SP - 815
EP - 820
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - I
ER -