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

S. Nariki; H. Hinai; N. Sakai; M. Murakami; M. Otsuka

doi:10.1016/S0921-4534(01)00373-2

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

S. Nariki, H. Hinai, N. Sakai, M. Murakami, M. Otsuka

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

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 T_c of the bulk samples was lowered with decreasing the size of Gd211 particle, J_c was not improved. However, we found that a depression of T_c was prevented by Ag addition, leading to higher J_c values. The J_c 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.

Original language	English
Pages (from-to)	817-820
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	357-360
DOIs	https://doi.org/10.1016/S0921-4534(01)00373-2
Publication status	Published - 2001 Aug
Externally published	Yes

Keywords

Critical current density
Critical temperature
Gd-Ba-Cu-O
Melt processing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(01)00373-2

Cite this

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

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.",

keywords = "Critical current density, Critical temperature, Gd-Ba-Cu-O, Melt processing",

author = "S. Nariki and H. Hinai and N. Sakai and M. Murakami and M. Otsuka",

year = "2001",

month = aug,

doi = "10.1016/S0921-4534(01)00373-2",

language = "English",

volume = "357-360",

pages = "817--820",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

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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, N.

AU - Murakami, M.

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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DO - 10.1016/S0921-4534(01)00373-2

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SN - 0921-4534

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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