Author:
Ishibashi Shinnosuke,Hagiwara Rikako,Naik Sugali Pavan Kumar,Ogino Hiraku,Pęczkowski Paweł,Ishida Shigeyuki,Eisaki Hiroshi,Sakai Naomichi,Oka Tetsuo,Nishio Taichiro
Abstract
Abstract
We report on top-seeded melt growth of GdBa2Cu3O7-δ
(GdBCO) bulks added by sharp edged Gd2BaCuO5 nanoparticles (Gd211U) refined by ultrasonication. GdBCO bulks mixed with 30 mol.% of Gd211U were examined to be grown isothermally at different temperatures in a range of 1015 °C−1035 °C using a top-seeded melt growth technique. Magnetic susceptibility measurements show that all samples become superconducting and especially samples grown at 1020°C and 1025°C have a maximum superconducting transition temperature (T
c) of 94.5 K. The critical current density (J
c) obtained from magnetic hysteresis loops for magnetic fields parallel to the c-axis is up to 65100 A/cm2 (the self-field at 77 K) for a sample grown at 1025 °C, while J
c of a GdBCO bulk with conventional Gd211 particles grown at 1025 °C for comparison is 29000 A/cm2 (the self-field at 77 K).
Subject
General Physics and Astronomy
Cited by
2 articles.
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