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 |
| Event | Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - Duration: 2004 Nov 23 → 2004 Nov 25 |
Keywords
- Contact resistance
- Metal deposition
- Persistent current switch
- YBCO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Cite this
Imaizumi, T., Sawa, K., Tomita, M., Murakami, M., Sakai, N., & Hirabayashi, I. (2005). Electrical contact characteristics of mechanically mated Y-Ba-Cu-O bulks with deposited metal layer. Physica C: Superconductivity and its applications, 426-431(I), 815-820. https://doi.org/10.1016/j.physc.2005.03.049