4 papers
Flux-Pinning Behaviors and Mechanism According to Dopant Level in (Fe, Ti) Paticle-Doped MgB Superconductor
H. B. Lee, G. C. Kim, Young Jin Shon +2
We have studied flux-pinning effects of MgB superconductor by doping (Fe, Ti) particles of which radius is 163 nm on average. 5 wt.\% (Fe, Ti) doped MgB among the specimens…
Water-Quenched Effects of 5 wt.% (Fe, Ti) particle-doped MgB Superconductor and Low Limit of Pinning Effect
H. B. Lee, G. C. Kim, Hyoungjeen Jeen +1
\begin{abstract} We have studied magnetic properties of water-quenched 5 wt.% (Fe, Ti) particle-doped MgB comparing with that of air-cooled one. Generally, grain refinement is…
Upper Critical Field Based on the Width of H = B region in a Superconductor
H. B. Lee, G. C. Kim, B. J. Kim +1
We studied a method of measuring upper critical field (H) of a superconductor based on the width of H = B region, which appears in the superconductor that volume defec…
Delta H = Delta B region in volume defect-dominating superconductor
H. B. Lee, G. C. Kim, H. J. Park +1
According to Ginzburg-Landau theory, it has been generally accepted that the diamagnetic property decreases after the lower critical field. However, we found that (Fe, Ti) particle…