Local measurements of the magnetization process of bulk superconductors induced by a pulsed magnetic field

Melt-textured growth of (LRE)–Ba–Cu–O by a cold-seeding method using SmBa2Cu3Oythin film as a seed

“…After the mapping was finished, the Hall sensor was moved to the peak position of the profile and was lowered to make a contact with the sample. The thus measured axial component of the trapped magnetic flux density (B max z ) at the height of the active area of the Hall sensor (about 0.64 mm above the sample surface) was 0.88 T. This value is close to that of our GdBCO bulk superconductor with a similar size prepared by hot-seeding [15,16], showing that a sample with similar quality could be grown by the cold-seeding method.…”

“…To check if the decrease in T c can be indeed explained by Mg contamination, we prepared GdBCO bulk superconductors doped with various amounts of Mg using an ordinary hotseeding method similar to the one used in our previous studies of Zn and Co doping to GdBCO [15,16,19,20]. Figure 4 shows the onset T c at position A1 of the Mg-doped GdBCO bulk superconductors as a function of the nominal content of Mg.…”