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Flux Jump Behaviors and Mechanism of MgB2 Synthesized by the Non-special Atmosphere Synthesis

Title
Flux Jump Behaviors and Mechanism of MgB2 Synthesized by the Non-special Atmosphere Synthesis
Authors
Lee, H. B.Kim, G. C.Kim, Y. C.Ahmad, D.Kwon, Yong Seung
DGIST Authors
Kwon, Yong Seung
Issue Date
2015-09
Citation
Journal of Superconductivity and Novel Magnetism, 28(9), 2663-2668
Type
Article
Article Type
Article
Keywords
DefectsFlux JumpHysteresis MeasurementsMgB2NAS ProcessPinning StrengthSharp TransitionSpecific HeatStainless SteelStainless Steel TubeSteady StateTubular Steel Structures
ISSN
1557-1939
Abstract
MgB2 samples were prepared from a stoichiometry mixture of Mg and B inside stainless steel tubes. The transition temperature of the specimens was 37.5 K with a sharp transition width within 1 K. From the magnetic hysteresis measurements, flux jump was observed up to 15 K. The flux jump is believed to begin at the fluxes pinned at the defects. An over-moving flux situation formed at the places where there were moving fluxes that had been pinned at the defect and steady state ones. The flux jumps depend not on the amount of impurities and second phases, but on their distribution, pinning strength and heat capacity. © 2015, Springer Science+Business Media New York.
URI
http://hdl.handle.net/20.500.11750/5173
DOI
10.1007/s10948-015-3095-5
Publisher
Springer New York LLC
Related Researcher
  • Author Kwon, Yong Seung Quantum Functional Materials Laboratory
  • Research Interests High Tc Superconductors and magnetic materials; Thermoelectric Materials
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceQuantum Functional Materials Laboratory1. Journal Articles


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