scholarly journals Advantages of Superconducting Device using 26 MgB2 Wire

2021 ◽  
Author(s):  
Toshiya Tanabe ◽  
V. Smaluk
Keyword(s):  
Superconducting Device ◽  
Mgb2 Wire

Small diameter wind and react coil made of anodised Al-sheathed MgB2 wire

2019 ◽  
Vol 32 (10) ◽  
pp. 105003 ◽  
Author(s):  
L Kopera ◽  
P Kováč ◽  
J Kováč ◽  
T Melišek ◽  
I Hušek ◽  
...  
Keyword(s):  
Small Diameter ◽  
Mgb2 Wire

scholarly journals Kondo effect and superconductivity in niobium with iron impurities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hansong Zeng ◽  
Dan Zhou ◽  
Guoqing Liang ◽  
Rujun Tang ◽  
Zhi H. Hang ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Low Temperatures ◽  
Kondo Effect ◽  
Film Structure ◽  
Kondo Temperature ◽  
Superconducting Transition ◽  
Interesting Phenomenon ◽  
Superconducting Device ◽  
Bcc Lattice ◽  
Device Applications

AbstractKondo effect is an interesting phenomenon in quantum many-body physics. Niobium (Nb) is a conventional superconductor important for many superconducting device applications. It was long thought that the Kondo effect cannot be observed in Nb because the magnetic moment of a magnetic impurity, e.g. iron (Fe), would have been quenched in Nb. Here we report an observation of the Kondo effect in a Nb thin film structure. We found that by co-annealing Nb films with Fe in Argon gas at above 400 $$^{\circ }$$ ∘ C for an hour, one can induce a Kondo effect in Nb. The Kondo effect is more pronounced at higher annealing temperature. The temperature dependence of the resistance suggests existence of remnant superconductivity at low temperatures even though the system never becomes superconducting. We find that the Hamann theory for the Kondo resistivity gives a satisfactory fitting to the result. The Hamann analysis gives a Kondo temperature for this Nb–Fe system at $$\sim $$ ∼ 16 K, well above the superconducting transition onset temperature 9 K of the starting Nb film, suggesting that the screening of the impurity spins is effective to allow Cooper pairs to form at low temperatures. We suggest that the mechanism by which the Fe impurities retain partially their magnetic moment is that they are located at the grain boundaries, not fully dissolved into the bcc lattice of Nb.

Nano-Strip Three-Terminal Superconducting Device for Cryogenic Detector Readout

2011 ◽  
Vol 21 (3) ◽  
pp. 717-720 ◽  
Author(s):  
Sergio Pagano ◽  
Nadia Martucciello ◽  
Roberto Cristiano ◽  
Mikkel Ejrnaes ◽  
Alessandro Casaburi ◽  
...  
Keyword(s):  
Cryogenic Detector ◽  
Superconducting Device

Tensile and Bending Stress Tolerance on Round MgB2 Wire Made By In Situ PIT Process

2018 ◽  
Vol 28 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Hideki Tanaka ◽  
Takayuki Suzuki ◽  
Motomune Kodama ◽  
Yota Ichiki ◽  
Toshio Haba ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Bending Stress ◽  
Mgb2 Wire

Enhanced critical current density at high magnetic fields in MgB2 wire processed by in-situ spark plasma sintering

2022 ◽  
Vol 891 ◽  
pp. 162007
Author(s):  
Lili Wang ◽  
Weidong Chen ◽  
Chengshan Li ◽  
Guo Yan ◽  
Yong Feng ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Critical Current Density ◽  
Critical Current ◽  
Spark Plasma Sintering ◽  
Current Density ◽  
High Magnetic Fields ◽  
Plasma Sintering ◽  
Mgb2 Wire ◽  
Spark Plasma

scholarly journals Engineering of superconductors and superconducting devices using artificial pinning sites

2017 ◽  
Vol 2 (8) ◽  
Author(s):  
Roger Wördenweber
Keyword(s):  
Superconducting Devices ◽  
Basic Research ◽  
Vortex State ◽  
Superconducting Films ◽  
Vortex Matter ◽  
Superconducting Device ◽  
New Concepts ◽  
Basic Physics ◽  
Power Handling Capability ◽  
Device Properties

Abstract Vortex matter in superconducting films and devices is not only an interesting topic for basic research but plays a substantial role in the applications of superconductivity in general. We demonstrate, that in most electronic applications, magnetic flux penetrates the superconductor and affects the performance of superconducting devices. Therefore, vortex manipulation turns out to be a useful tool to avoid degradation of superconducting device properties. Moreover, it can also be used to analyze and understand novel and interesting physical properties and develop new concepts for superconductor applications. In this review, various concepts for vortex manipulation are sketched. For example, the use of micro- and nanopatterns (especially, antidots) for guiding and trapping of vortices in superconducting films and thin film devices is discussed and experimental evidence of their vortex guidance and vortex trapping by various arrangements of antidots is given. We demonstrate, that the vortex state of matter is very important in applications of superconductivity. A better understanding does not only lead to an improvement of the performance of superconductor components, such as reduced noise, better power handling capability, or improved reliability, it also promises deeper insight into the basic physics of vortices and vortex matter.

scholarly journals Experimental Test and Analysis of AC Losses in Multifilamentary MgB2 Wire

2019 ◽  
Vol 29 (5) ◽  
pp. 1-5 ◽  
Author(s):  
Jiawen Xi ◽  
Xiaoze Pei ◽  
Jie Sheng ◽  
Hideki Tanaka ◽  
Yota Ichiki ◽  
...  
Keyword(s):  
Experimental Test ◽  
Ac Losses ◽  
Mgb2 Wire

AC Losses of Monofilament Ti-clad MgB2 Wire

2010 ◽  
Vol 24 (1-2) ◽  
pp. 437-441
Author(s):  
S. Safran ◽  
J. Šouc ◽  
L. Rostila ◽  
S. Brisigotti ◽  
F. Gömöry ◽  
...  
Keyword(s):  
Ac Losses ◽  
Mgb2 Wire

scholarly journals Nanoengineered Superconducting Wire: Tailored Materials for High-Performance MgB2 Wire (Adv. Mater. 42/2011)

2011 ◽  
Vol 23 (42) ◽  
pp. 4820-4820
Author(s):  
Jung Ho Kim ◽  
Sangjun Oh ◽  
Hiroaki Kumakura ◽  
Akiyoshi Matsumoto ◽  
Yoon-Uk Heo ◽  
...  
Keyword(s):  
High Performance ◽  
Superconducting Wire ◽  
Mgb2 Wire

Influence of Sintering Conditions on Bending Tolerance at RT and I c of In Situ MgB2 wire

2019 ◽  
Vol 29 (5) ◽  
pp. 1-4 ◽  
Author(s):  
Hideki Tanaka ◽  
Takaaki Suzuki ◽  
Motomune Kodama ◽  
Gen Nishijima ◽  
Akiyoshi Matsumoto
Keyword(s):  
Mgb2 Wire ◽  
Sintering Conditions
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