Effect of microstructure on the superconducting properties of Gd-Ba-Cu-O bulk fabricated in air

S. Nariki, H. Hinai, Naomichi Sakai, Masato Murakami, M. Otsuka

研究成果: Article

10 引用 (Scopus)

抄録

Bulk Gd-Ba-Cu-O superconductors were melt processed in air. The Gd2BaCuO5 (Gd211) particles dispersed in the melt-textured bulk could be refined by employing fine Gd211 starting powders. Since Tc of the bulk samples was lowered with decreasing the size of Gd211 particle, Jc was not improved. However, we found that a depression of Tc was prevented by Ag addition, leading to higher Jc values. The Jc of Gd-Ba-Cu-O/Ag with Gd211 particles about 0.7 μm in size exhibited 60 000 A/cm2 at 77 K and self-field.

元の言語English
ページ(範囲)817-820
ページ数4
ジャーナルPhysica C: Superconductivity and its Applications
357-360
発行部数SUPPL. 2
DOI
出版物ステータスPublished - 2001 8
外部発表Yes

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Superconducting materials
microstructure
Microstructure
air
Air

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

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abstract = "Bulk Gd-Ba-Cu-O superconductors were melt processed in air. The Gd2BaCuO5 (Gd211) particles dispersed in the melt-textured bulk could be refined by employing fine Gd211 starting powders. Since Tc of the bulk samples was lowered with decreasing the size of Gd211 particle, Jc was not improved. However, we found that a depression of Tc was prevented by Ag addition, leading to higher Jc values. The Jc of Gd-Ba-Cu-O/Ag with Gd211 particles about 0.7 μm in size exhibited 60 000 A/cm2 at 77 K and self-field.",
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T1 - Effect of microstructure on the superconducting properties of Gd-Ba-Cu-O bulk fabricated in air

AU - Nariki, S.

AU - Hinai, H.

AU - Sakai, Naomichi

AU - Murakami, Masato

AU - Otsuka, M.

PY - 2001/8

Y1 - 2001/8

N2 - Bulk Gd-Ba-Cu-O superconductors were melt processed in air. The Gd2BaCuO5 (Gd211) particles dispersed in the melt-textured bulk could be refined by employing fine Gd211 starting powders. Since Tc of the bulk samples was lowered with decreasing the size of Gd211 particle, Jc was not improved. However, we found that a depression of Tc was prevented by Ag addition, leading to higher Jc values. The Jc of Gd-Ba-Cu-O/Ag with Gd211 particles about 0.7 μm in size exhibited 60 000 A/cm2 at 77 K and self-field.

AB - Bulk Gd-Ba-Cu-O superconductors were melt processed in air. The Gd2BaCuO5 (Gd211) particles dispersed in the melt-textured bulk could be refined by employing fine Gd211 starting powders. Since Tc of the bulk samples was lowered with decreasing the size of Gd211 particle, Jc was not improved. However, we found that a depression of Tc was prevented by Ag addition, leading to higher Jc values. The Jc of Gd-Ba-Cu-O/Ag with Gd211 particles about 0.7 μm in size exhibited 60 000 A/cm2 at 77 K and self-field.

KW - Critical current density

KW - Critical temperature

KW - Gd-Ba-Cu-O

KW - Melt processing

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