Fabrication of large single-domain Sm123 superconductors by OCMG method

N. Hayashi, P. Diko, K. Nagashima, S. I. Yoo, Naomichi Sakai, Masato Murakami

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Melt processing of Sm-Ba-Cu-O bulk superconductors was studied to find the optimum conditions for fabricating a large single-domain superconductor. First, the holding time at the maximum temperature for the partial melting is important for the fabrication of a uniform bulk, especially for a large diameter. When the holding time at the maximum temperature during partial melting was not enough, two separated regions were observed, which can be diminished by sufficient holding time. Next we studied the optimum conditions for grain growth, varying the temperature gradient and cooling rate. The processing condition with which we have succeeded in growing a single-domain SmBa2Cu3Oy (Sm123 hereafter) with dimensions of 35 φ x 15 mm2 is a temperature gradient of 7.5°C cm-1 with a slow cooling rate of 0.33°C h-1.

Original languageEnglish
Pages (from-to)104-108
Number of pages5
JournalMaterials Science and Engineering B
Volume53
Issue number1-2
Publication statusPublished - 1998 May 1
Externally publishedYes

Fingerprint

Thermal gradients
Superconducting materials
Melting
Cooling
Fabrication
fabrication
temperature gradients
Processing
Grain growth
melting
cooling
Temperature
temperature

Keywords

  • OCMG-process
  • Single-domain
  • SmBaCuO
  • Superconductor
  • Trapped field

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Fabrication of large single-domain Sm123 superconductors by OCMG method. / Hayashi, N.; Diko, P.; Nagashima, K.; Yoo, S. I.; Sakai, Naomichi; Murakami, Masato.

In: Materials Science and Engineering B, Vol. 53, No. 1-2, 01.05.1998, p. 104-108.

Research output: Contribution to journalArticle

Hayashi, N. ; Diko, P. ; Nagashima, K. ; Yoo, S. I. ; Sakai, Naomichi ; Murakami, Masato. / Fabrication of large single-domain Sm123 superconductors by OCMG method. In: Materials Science and Engineering B. 1998 ; Vol. 53, No. 1-2. pp. 104-108.
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