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Flux jump behaviors and mechanism of FeTi doped MgB2 at 5 K

Title
Flux jump behaviors and mechanism of FeTi doped MgB2 at 5 K
Authors
Lee, HB[Lee, H. B.]Kim, GC[Kim, G. C.]Kim, YC[Kim, Y. C.]Ahmad, D[Ahmad, D.]
DGIST Authors
Ahmad, D[Ahmad, D.]
Issue Date
2015-08-15
Citation
Physica C: Superconductivity and Its Applications, 515, 31-35
Type
Article
Article Type
Article
Keywords
Fe-DopedFeTi ParticlesFlux JumpFlux PinningMgB2Pinning EffectsSpecific HeatStainless SteelStainless Steel TubeTubular Steel Structures
ISSN
0921-4534
Abstract
This study examined the flux jump behaviors of Fe-doped MgB2 according to content of FeTi particles at 5 K, at which flux jump has been shown to be more frequent. The samples were synthesized in a stainless steel tube with Mg, B and FeTi particles. The motives of flux jump in MgB2 superconductors are over-moving fluxes around the defects and the low heat capacity of MgB2. MgB2 was doped with FeTi particles to overcome these vulnerable points of MgB2. The flux jump of MgB2 decreased with increasing content of doped FeTi particles. On the other hand, excessive doping of FeTi resulted in a decrease of diamagnetic properties and the flux pinning effects together. It is concluded that FeTi particles in MgB2 do not block the flux jump itself, but the propagation of flux jump of MgB2. © 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2864
DOI
10.1016/j.physc.2015.05.002
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceQuantum Functional Materials Laboratory1. Journal Articles


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