Strongly enhanced current densities in Sr0.6K0.4Fe2As2 + Sn superconducting tapes

被引：43

作者：

Lin, He ^{[1
]}

Yao, Chao ^{[1
]}

Zhang, Xianping ^{[1
]}

Zhang, Haitao ^{[1
]}

Wang, Dongliang ^{[1
]}

Zhang, Qianjun ^{[1
]}

Ma, Yanwei ^{[1
]}

Awaji, Satoshi ^{[2
]}

Watanabe, Kazuo ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100190, Peoples R China

[2] Tohoku Univ, Inst Mat Res, High Field Lab Superconducting Mat, Sendai, Miyagi 9808577, Japan

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

基金：

中国国家自然科学基金;

关键词：

BEHAVIOR; TAPES; WIRES;

D O I：

10.1038/srep04465

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Improving transport current has been the primary topic for practical application of superconducting wires and tapes. However, the porous nature of powder-in-tube (PIT) processed iron-based tapes is one of the important reasons for low critical current density (J(c)) values. In this work, the superconducting core density of ex-situ Sr0.6K0.4Fe2As2 + Sn tapes, prepared from optimized precursors, was significantly improved by employing a simple hot pressing as an alternative route for final sintering. The resulting samples exhibited optimal critical temperature (T-c), sharp resistive transition, small resistivity and high Vickers hardness (Hv) value. Consequently, the transport J(c) reached excellent values of 5.1 x 10(4) A/cm(2) in 10 T and 4.3 x 10(4) A/cm(2) in 14 T at 4.2 K, respectively. Our tapes also exhibited high upper critical field H-c2 and almost field-independent J(c). These results clearly demonstrate that PIT pnictide wire conductors are very promising for high-field magnet applications.

引用

页数：5

共 33 条

[21] Enhancement of Jc-B properties for binary and carbon-doped MgB2 tapes by hot pressing [J].

Wang, Dongliang ;

Wang, Chengduo ;

Zhang, Xianping ;

Gao, Zhaoshun ;

Yao, Chao ;

Ma, Yanwei ;

Kanazawa, Masaya ;

Yamada, Yutaka ;

Oguro, Hidetoshi ;

Awaji, Satoshi ;

Watanabe, Kazuo .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2012, 25 (06)

[22] Influence of Pb addition on the superconducting properties of polycrystalline Sr0.6K0.4Fe2As2 [J].

Wang, Lei ;

Qi, Yanpeng ;

Zhang, Zhiyu ;

Wang, Dongliang ;

Zhang, Xianping ;

Gao, Zhaoshun ;

Yao, Chao ;

Ma, Yanwei .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (05)

[23] Large transport critical currents of powder-in-tube Sr0.6K0.4Fe2As2/Ag superconducting wires and tapes [J].

Wang, Lei ;

Qi, Yanpeng ;

Wang, Dongliang ;

Zhang, Xianping ;

Gao, Zhaoshun ;

Zhang, Zhiyu ;

Ma, Yanwei ;

Awaji, Satoshi ;

Nishijima, Gen ;

Watanabe, Kazuo .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 (02) :183-186

[24] The role of silver addition on the structural and superconducting properties of polycrystalline Sr0.6K0.4Fe2As2 [J].

Wang, Lei ;

Qi, Yanpeng ;

Gao, Zhaoshun ;

Wang, Dongliang ;

Zhang, Xianping ;

Ma, Yanwei .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (02)

[25] Very strong intrinsic flux pinning and vortex avalanches in (Ba, K)Fe2As2 superconducting single crystals [J].

Wang, Xiao-Lin ;

Ghorbani, S. R. ;

Lee, Sung-Ik ;

Dou, S. X. ;

Lin, C. T. ;

Johansen, T. H. ;

Mueller, K.-H. ;

Cheng, Z. X. ;

Peleckis, G. ;

Shabazi, M. ;

Qviller, A. J. ;

Yurchenko, V. V. ;

Sun, G. L. ;

Sun, D. L. .

PHYSICAL REVIEW B, 2010, 82 (02)

[26] Mechanochemical synthesis of pnictide compounds and superconducting Ba0.6K0.4Fe2As2 bulks with high critical current density [J].

Weiss, J. D. ;

Jiang, J. ;

Polyanskii, A. A. ;

Hellstrom, E. E. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2013, 26 (07)

[27]

Weiss JD, 2012, NAT MATER, V11, P682, DOI [10.1038/nmat3333, 10.1038/NMAT3333]

[28] Improvement of the critical current properties of in situ powder-in-tube-processed MgB2 tapes by hot pressing [J].

Yamada, H. ;

Igarashi, M. ;

Nemoto, Y. ;

Yamada, Y. ;

Tachikawa, K. ;

Kitaguchi, H. ;

Matsumoto, A. ;

Kumakura, H. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (04)

[29] Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2 [J].

Yamamoto, A. ;

Jaroszynski, J. ;

Tarantini, C. ;

Balicas, L. ;

Jiang, J. ;

Gurevich, A. ;

Larbalestier, D. C. ;

Jin, R. ;

Sefat, A. S. ;

McGuire, M. A. ;

Sales, B. C. ;

Christen, D. K. ;

Mandrus, D. .

APPLIED PHYSICS LETTERS, 2009, 94 (06)

[30] Evidence for two distinct scales of current flow in polycrystalline Sm and Nd iron oxypnictides [J].

Yamamoto, A. ;

Polyanskii, A. A. ;

Jiang, J. ;

Kametani, F. ;

Tarantini, C. ;

Hunte, F. ;

Jaroszynski, J. ;

Hellstrom, E. E. ;

Lee, P. J. ;

Gurevich, A. ;

Larbalestier, D. C. ;

Ren, Z. A. ;

Yang, J. ;

Dong, X. L. ;

Lu, W. ;

Zhao, Z. X. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2008, 21 (09)

← 1 2 3 4 →