High Critical Current Density in Cu-Sheathed SmFeAsO1-xFx Superconducting Tapes by Low-Temperature Hot-Pressing

Qianjun Zhang; Chao Yao; Xianping Zhang; Dongliang Wang; Chiheng Dong; He Huang; Pusheng Yuan; Yanwei Ma; Satoshi Awaji; Kazuo Watanabe

doi:10.1109/TASC.2016.2536798

High Critical Current Density in Cu-Sheathed SmFeAsO_1-xF_x Superconducting Tapes by Low-Temperature Hot-Pressing

Qianjun Zhang, Chao Yao, Xianping Zhang, Dongliang Wang, Chiheng Dong, He Huang, Pusheng Yuan, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe

High Field Laboratory for Superconducting Materials

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

2 Citations (Scopus)

Abstract

Cu-sheathed SmFeAsO_1-xF_x tapes were fabricated by the ex situ powder-in-tube method. A series of low-temperature (400 °C) hot-pressing process and ordinary sintering process was applied on the tapes, respectively. A transport critical current density (J_c) value of 2.37 × 10⁴ A cm^-2 (at 4.2 K and self-field) was achieved in the Cu-sheathed SmFeAsO_1-xF_x hot-pressed tapes. This is the first time that a large transport J_c is obtained in Cu-sheathed 1111-type wires. The scanning electron microscopy also revealed that the low-temperature hot-pressing technique is effective in preventing the reaction layer between Cu-sheath and superconducting core.

Original language	English
Article number	7468584
Journal	IEEE Transactions on Applied Superconductivity
Volume	26
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2016.2536798
Publication status	Published - 2016 Apr

Keywords

Fe-based superconductors
Iron pnictide
high temperature superconductors
wires

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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High Critical Current Density in Cu-Sheathed SmFeAsO_1-xF_x Superconducting Tapes by Low-Temperature Hot-Pressing. / Zhang, Qianjun; Yao, Chao; Zhang, Xianping; Wang, Dongliang; Dong, Chiheng; Huang, He; Yuan, Pusheng; Ma, Yanwei; Awaji, Satoshi; Watanabe, Kazuo.

In: IEEE Transactions on Applied Superconductivity, Vol. 26, No. 3, 7468584, 04.2016.

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

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title = "High Critical Current Density in Cu-Sheathed SmFeAsO1-xFx Superconducting Tapes by Low-Temperature Hot-Pressing",

abstract = "Cu-sheathed SmFeAsO1-xFx tapes were fabricated by the ex situ powder-in-tube method. A series of low-temperature (400 °C) hot-pressing process and ordinary sintering process was applied on the tapes, respectively. A transport critical current density (Jc) value of 2.37 × 104 A cm-2 (at 4.2 K and self-field) was achieved in the Cu-sheathed SmFeAsO1-xFx hot-pressed tapes. This is the first time that a large transport Jc is obtained in Cu-sheathed 1111-type wires. The scanning electron microscopy also revealed that the low-temperature hot-pressing technique is effective in preventing the reaction layer between Cu-sheath and superconducting core.",

keywords = "Fe-based superconductors, Iron pnictide, high temperature superconductors, wires",

author = "Qianjun Zhang and Chao Yao and Xianping Zhang and Dongliang Wang and Chiheng Dong and He Huang and Pusheng Yuan and Yanwei Ma and Satoshi Awaji and Kazuo Watanabe",

note = "Funding Information: This work was supported in part by the National {"}973{"} Program under Grant 2011CBA00105, by the National Natural Science Foundation of China under Grant 51320105015 and Grant 51202243, and by the Beijing Municipal Science and Technology Commission under Grant Z141100004214002.",

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AU - Dong, Chiheng

AU - Huang, He

AU - Yuan, Pusheng

AU - Ma, Yanwei

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

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AB - Cu-sheathed SmFeAsO1-xFx tapes were fabricated by the ex situ powder-in-tube method. A series of low-temperature (400 °C) hot-pressing process and ordinary sintering process was applied on the tapes, respectively. A transport critical current density (Jc) value of 2.37 × 104 A cm-2 (at 4.2 K and self-field) was achieved in the Cu-sheathed SmFeAsO1-xFx hot-pressed tapes. This is the first time that a large transport Jc is obtained in Cu-sheathed 1111-type wires. The scanning electron microscopy also revealed that the low-temperature hot-pressing technique is effective in preventing the reaction layer between Cu-sheath and superconducting core.

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