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

3 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

Access to Document

10.1109/TASC.2016.2536798

Cite this

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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. Publisher Copyright: {\textcopyright} 2016 IEEE.",

year = "2016",

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doi = "10.1109/TASC.2016.2536798",

language = "English",

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T1 - High Critical Current Density in Cu-Sheathed SmFeAsO1-xFx Superconducting Tapes by Low-Temperature Hot-Pressing

AU - Zhang, Qianjun

AU - Yao, Chao

AU - Zhang, Xianping

AU - Wang, Dongliang

AU - Dong, Chiheng

AU - Huang, He

AU - Yuan, Pusheng

AU - Ma, Yanwei

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

N1 - 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. Publisher Copyright: © 2016 IEEE.

PY - 2016/4

Y1 - 2016/4

N2 - 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.

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.

KW - Fe-based superconductors

KW - Iron pnictide

KW - high temperature superconductors

KW - wires

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