Sharp edged Gd2BaCuO5particles addition effect on growth and properties of top-seeded melt-grown GdBa2Cu3O7-δ bulk superconductors

Shinnosuke Ishibashi, Rikako Hagiwara, Sugali Pavan Kumar Naik, Hiraku Ogino, Paweł Pȩczkowski, Shigeyuki Ishida, Hiroshi Eisaki, Naomichi Sakai, Tetsuo Oka, Taichiro Nishio

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

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).

Original languageEnglish
Article number012022
JournalJournal of Physics: Conference Series
Volume2323
Issue number1
DOIs
Publication statusPublished - 2022
Event34th International Symposium on Superconductivity, ISS 2021 - Virtual, Online
Duration: 2021 Nov 302021 Dec 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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