Enhancement of critical current densities by high-pressure sintering in (Sr,K)Fe2As2 PIT wires

Sunseng Pyon; Yuji Tsuchiya; Hiroshi Inoue; Hideki Kajitani; Norikiyo Koizumi; Satoshi Awaji; Kazuo Watanabe; Tsuyoshi Tamegai

doi:10.1088/0953-2048/27/9/095002

Enhancement of critical current densities by high-pressure sintering in (Sr,K)Fe_2As2 PIT wires

Sunseng Pyon, Yuji Tsuchiya, Hiroshi Inoue, Hideki Kajitani, Norikiyo Koizumi, Satoshi Awaji, Kazuo Watanabe, Tsuyoshi Tamegai

金属材料研究所・附属強磁場超伝導材料研究センター

研究成果: Article › 査読

33 被引用数 (Scopus)

抄録

We have fabricated (Sr,K)Fe_2As2 superconducting wire through a powder-in-tube method that is combined with a hot isostatic pressing technique. The transport J _c in the wire at 4.2 K has reached 1.0 × 10⁵ A cm^-2 under self-field, and 9.4 × 10 ³ A cm^-2 at 100 kOe. This is the first report that the transport J_c reaches 1 × 10⁵ A cm^-2 in a (Sr,K)Fe_2As2 round wire. Magneto-optical imaging of the wire has confirmed the large intergranular critical current density in the wire core. The microstructure and compositional analyses imply that there is room for improvement of the J_c value through the optimization of the wire fabrication process.

本文言語	English
論文番号	095002
ジャーナル	Superconductor Science and Technology
巻	27
号	9
DOI	https://doi.org/10.1088/0953-2048/27/9/095002
出版ステータス	Published - 2014 9月 1

ASJC Scopus subject areas

セラミックおよび複合材料
凝縮系物理学
金属および合金
電子工学および電気工学
材料化学

文献へのアクセス

10.1088/0953-2048/27/9/095002

他のファイルとリンク

引用スタイル

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title = "Enhancement of critical current densities by high-pressure sintering in (Sr,K)Fe2As2 PIT wires",

abstract = "We have fabricated (Sr,K)Fe2As2 superconducting wire through a powder-in-tube method that is combined with a hot isostatic pressing technique. The transport J c in the wire at 4.2 K has reached 1.0 × 105 A cm-2 under self-field, and 9.4 × 10 3 A cm-2 at 100 kOe. This is the first report that the transport Jc reaches 1 × 105 A cm-2 in a (Sr,K)Fe2As2 round wire. Magneto-optical imaging of the wire has confirmed the large intergranular critical current density in the wire core. The microstructure and compositional analyses imply that there is room for improvement of the Jc value through the optimization of the wire fabrication process.",

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author = "Sunseng Pyon and Yuji Tsuchiya and Hiroshi Inoue and Hideki Kajitani and Norikiyo Koizumi and Satoshi Awaji and Kazuo Watanabe and Tsuyoshi Tamegai",

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T1 - Enhancement of critical current densities by high-pressure sintering in (Sr,K)Fe2As2 PIT wires

AU - Pyon, Sunseng

AU - Tsuchiya, Yuji

AU - Inoue, Hiroshi

AU - Kajitani, Hideki

AU - Koizumi, Norikiyo

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

AU - Tamegai, Tsuyoshi

PY - 2014/9/1

Y1 - 2014/9/1

N2 - We have fabricated (Sr,K)Fe2As2 superconducting wire through a powder-in-tube method that is combined with a hot isostatic pressing technique. The transport J c in the wire at 4.2 K has reached 1.0 × 105 A cm-2 under self-field, and 9.4 × 10 3 A cm-2 at 100 kOe. This is the first report that the transport Jc reaches 1 × 105 A cm-2 in a (Sr,K)Fe2As2 round wire. Magneto-optical imaging of the wire has confirmed the large intergranular critical current density in the wire core. The microstructure and compositional analyses imply that there is room for improvement of the Jc value through the optimization of the wire fabrication process.

AB - We have fabricated (Sr,K)Fe2As2 superconducting wire through a powder-in-tube method that is combined with a hot isostatic pressing technique. The transport J c in the wire at 4.2 K has reached 1.0 × 105 A cm-2 under self-field, and 9.4 × 10 3 A cm-2 at 100 kOe. This is the first report that the transport Jc reaches 1 × 105 A cm-2 in a (Sr,K)Fe2As2 round wire. Magneto-optical imaging of the wire has confirmed the large intergranular critical current density in the wire core. The microstructure and compositional analyses imply that there is room for improvement of the Jc value through the optimization of the wire fabrication process.

KW - (Sr,K)Fe2As2

KW - critical current density

KW - hot isostatic pressing

KW - magneto-optical imaging

KW - powder in tube (PIT)

KW - superconducting wires

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