Effect of BaO2 and fine Gd2BaCuO7-δ addition on the superconducting properties of air-processed GdBa 2Cu3O7-δ

Caixuan Xu, Anming Hu, Naomichi Sakai, Mitsuru Izumi, Izumi Hirabayashi

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Abstract

Single-domain GdBa2Cu3O7-δ (Gd123) bulk superconductors were fabricated in air and studied with different BaC 2 contents and Gd2BaCuO7-δ (Gd211) initial particle sizes. The experiments showed that BaO2 addition effectively suppressed the Gd/Ba substitution and therefore enhanced superconducting properties such as Jc and Birr. An optimum addition amount is Gd123:BaO2 = 1:0.1 molar. By employing fine Gd211, Jc at low magnetic fields is further enhanced. At B = 0 and 77 K, Jc reached 86 000 A cm-2, which is a record high Jc value for melt-processed Gd123 bulk samples in air.

Original languageEnglish
Pages (from-to)229-233
Number of pages5
JournalSuperconductor Science and Technology
Volume18
Issue number3
DOIs
Publication statusPublished - 2005 Mar 1

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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