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Flux Jump Behaviors and Mechanism of MgB2 Synthesized by the Non-special Atmosphere Synthesis
- Flux Jump Behaviors and Mechanism of MgB2 Synthesized by the Non-special Atmosphere Synthesis
- Lee, H. B.; Kim, G. C.; Kim, Y. C.; Ahmad, D.; Kwon, Yong Seung
- DGIST Authors
- Kwon, Yong Seung
- Issue Date
- Journal of Superconductivity and Novel Magnetism, 28(9), 2663-2668
- Article Type
- Defects; Flux Jump; Hysteresis Measurements; MgB2; NAS Process; Pinning Strength; Sharp Transition; Specific Heat; Stainless Steel; Stainless Steel Tube; Steady State; Tubular Steel Structures
- 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.
- Springer New York LLC
- Related Researcher
Kwon, Yong Seung
Quantum Functional Materials Laboratory
High Tc Superconductors and magnetic materials; Thermoelectric Materials
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