Fabrication of Gd-Ba-Cu-O bulk superconductors with a cold seeding method

Kazuo Inoue, Naomichi Sakai, Masato Murakami, I. Hirabayashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The target of an unmanned space experiment is the fabrication of large grain Gd-Ba-Cu-O superconductors 12 cm in diameter in microgravity environment. The advantage of the space experiment is the support of a huge sample by a seed crystal alone. For this experiment, the cold seeding (CS) method must be employed to meet the requirements of the space program. Although the CS method is easy to apply, it has been difficult to grow large grain samples because of a small temperature window for a stable crystal growth. We thus studied the heat schedules for the space experiment using a prototype ground experiment furnace, which is similar to the furnaces launched into space. We could find the melt growth conditions that enabled us to successfully grow Gd-Ba-Cu-O bulk superconductors 10 cm in diameter even by the CS method.

Original languageEnglish
Pages (from-to)543-549
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1

Fingerprint

inoculation
Superconducting materials
Fabrication
fabrication
furnaces
Experiments
space programs
Furnaces
schedules
microgravity
Microgravity
crystal growth
seeds
Crystallization
Crystal growth
prototypes
heat
requirements
Crystals
crystals

Keywords

  • Bulk
  • Cold seeding
  • Gd-Ba-Cu-O
  • Melt-processing

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Fabrication of Gd-Ba-Cu-O bulk superconductors with a cold seeding method. / Inoue, Kazuo; Sakai, Naomichi; Murakami, Masato; Hirabayashi, I.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 543-549.

Research output: Contribution to journalArticle

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