Superconducting properties and magneto-optical imaging of Ba0.6K0.4Fe2As2 PIT wires with Ag addition

被引：42

作者：

Ding, Qing-Ping ^{[1
,2
]}

Prombood, Trirat ^{[1
]}

Tsuchiya, Yuji ^{[1
]}

Nakajima, Yasuyuki ^{[1
,2
]}

Tamegai, Tsuyoshi ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] Transformat Res Project Iron Pnictides TRIP, JST, Bunkyo Ku, Tokyo 1138656, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2012年 / 25卷 / 03期

关键词：

Iron-based Superconductors - Silver - Superconducting wire - Barium compounds - Iron compounds;

D O I：

10.1088/0953-2048/25/3/035019

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated (Ba, K)Fe2As2 superconducting wires through an ex situ powder-in-tube method. Silver was used as a chemical addition to improve the performance of these superconducting wires. The transport critical current densities (J(c)) have reached 1.3 x 10(4) A cm(-2) and 1.0 x 10(4) A cm(-2) at 4.2 K under self-field in the wires with and without Ag addition. We used a magneto-optical (MO) imaging technique to investigate the properties of grain boundaries in the (Ba, K)Fe2As2 superconducting wire with Ag addition. MO images show the weak links in the Fe-based superconducting wires for the first time. An intragranular J(c) of 6.0 x 10(4) A cm(-2) at 20 K is obtained from the MO image, which is consistent with the estimation from M-H measurement.

引用

页数：5

共 24 条

[1] Determination of anisotropic Hc2 up to 60 T in Ba0.55K0.45Fe2As2 single crystals [J].

Altarawneh, M. M. ;

Collar, K. ;

Mielke, C. H. ;

Ni, N. ;

Bud'ko, S. L. ;

Canfield, P. C. .

PHYSICAL REVIEW B, 2008, 78 (22)

[2] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS [J].

BEAN, CP .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :31-+

[3] Still alluring and hard to predict at 100 [J].

Canfield, Paul C. .

NATURE MATERIALS, 2011, 10 (04) :259-261

[4] Magneto-optical imaging of polycrystalline FeTe1-xSex prepared at various conditions [J].

Ding, Q. ;

Taen, T. ;

Mohan, S. ;

Nakajima, Y. ;

Tamegai, T. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2011, 471 (21-22) :651-655

[5] Magneto-optical imaging and transport properties of FeSe superconducting tapes prepared by the diffusion method [J].

Ding, Qing-Ping ;

Mohan, Shyam ;

Tsuchiya, Yuji ;

Taen, Toshihiro ;

Nakajima, Yasuyuki ;

Tamegai, Tsuyoshi .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2012, 25 (02)

[6] Low-temperature synthesis of FeTe0.5Se0.5 polycrystals with a high transport critical current density [J].

Ding, Qing-Ping ;

Mohan, Shyam ;

Tsuchiya, Yuji ;

Taen, Toshihiro ;

Nakajima, Yasuyuki ;

Tamegai, Tsuyoshi .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2011, 24 (07)

[7] The behavior of grain boundaries in the Fe-based superconductors [J].

Durrell, J. H. ;

Eom, C-B ;

Gurevich, A. ;

Hellstrom, E. E. ;

Tarantini, C. ;

Yamamoto, A. ;

Larbalestier, D. C. .

REPORTS ON PROGRESS IN PHYSICS, 2011, 74 (12)

[8] Effective Ex-situ Fabrication of F-Doped SmFeAsO Wire for High Transport Critical Current Density [J].

Fujioka, Masaya ;

Kota, Tomohiro ;

Matoba, Masanori ;

Ozaki, Toshinori ;

Takano, Yoshihiko ;

Kumakura, Hiroaki ;

Kamihara, Yoichi .

APPLIED PHYSICS EXPRESS, 2011, 4 (06)

[9] High transport critical current densities in textured Fe-sheathed Sr1-xKxFe2As2+Sn superconducting tapes [J].

Gao, Zhaoshun ;

Wang, Lei ;

Yao, Chao ;

Qi, Yanpeng ;

Wang, Chunlei ;

Zhang, Xianping ;

Wang, Dongliang ;

Wang, Chengduo ;

Ma, Yanwei .

APPLIED PHYSICS LETTERS, 2011, 99 (24)

[10] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K [J].

Kamihara, Yoichi ;

Watanabe, Takumi ;

Hirano, Masahiro ;

Hosono, Hideo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3296-+

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