Transport properties of sealed MgB2/Fe/Ni multifilamentary wires heat treated in air

被引：6

作者：

Devadas, K. M. ^{[1
]}

Rahul, S. ^{[1
]}

Thomas, Syju ^{[1
]}

Varghese, Neson ^{[1
]}

Vinod, K. ^{[1
]}

Syamaprasad, U. ^{[1
]}

Pradhan, S. ^{[2
]}

Chattopadhyay, M. K. ^{[3
]}

Roy, S. B. ^{[3
]}

机构：

[1] CSIR, Natl Inst Interdisciplinary Sci & Technol, Trivandrum 695019, Kerala, India

[2] Inst Plasma Res, Gandhinagar 382428, India

[3] Raja Ramanna Ctr Adv Technol, Magnet & Superconducting Mat Sect, Indore 452013, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 31期

关键词：

MgB2; superconductor; End sealing; Heat treatment in air; Critical current; ELECTROMAGNETIC PROPERTIES; MGB2; WIRES; CARBON;

D O I：

10.1016/j.jallcom.2011.04.147

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ni sheathed multifilamentary MgB2 wires with Fe barrier and Cu stabilizer were prepared by the in situ Powder-In-Tube (PIT) method. After rolling, the ends of the wires were sealed by a simple capping technique and the wires were directly heat treated in air, without vacuum or any inert atmosphere. The quality of the wires was assessed by analysing the phase assemblage and measurement of superconducting properties such as R-T, J(C)-T and J(C)-H. Phase analysis revealed that only traces of MgO was formed in the superconductor core. Typical multifilamentary wires prepared by this method showed a T-C approximate to 38.5 K and Delta T-C approximate to 1 K and J(C) of the order of 10(5) A/cm(2) at 6 K (0 T) and 10(4) A/cm(2) at 4.2 K (6 T) respectively. These values are quite comparable with the values obtained for wires heat treated in inert atmosphere. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：8038 / 8041

页数：4

共 14 条

[1] Development of ex situ processed MgB2 wires and their applications to magnets
Braccini, Valeria
Nardelli, Davide
Penco, Roberto
Grasso, Giovanni
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 456 (1-2): : 209 - 217
[2] Prospects for improving the intrinsic and extrinsic properties of magnesium diboride superconducting strands
Collings, E. W.
Sumption, M. D.
Bhatia, M.
Susner, M. A.
Bohnenstiehl, S. D.
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2008, 21 (10)
[3] Mechanism of enhancement in electromagnetic properties of MgB2 by nano SiC doping
Dou, S. X.
Shcherbakova, O.
Yoeh, W. K.
Kim, J. H.
Soltanian, S.
Wang, X. L.
Senatore, C.
Flukiger, R.
Dhalle, M.
Husnjak, O.
Babic, E.
[J]. PHYSICAL REVIEW LETTERS, 2007, 98 (09)
[4] Application Prospects of MgB2 in View of Its Basic Properties
Eisterer, Michael
Weber, Harald W.
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2009, 19 (03) : 2788 - 2792
[5] Strong enhancement of Jc and Birr in binary in situ MgB2 wires after cold high pressure densification
Flukiger, R.
Hossain, M. S. A.
Senatore, C.
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (08)
[6] Superconductivity of powder-in-tube MgB2 wires
Glowacki, BA
Majoros, M
Vickers, M
Evetts, JE
Shi, Y
McDougall, I
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2001, 14 (04) : 193 - 199
[7] Reactive nanostructured carbon as an effective doping agent for MgB2
Gruner, W.
Herrmann, M.
Nilsson, A.
Hermann, H.
Hassler, W.
Holzapfel, B.
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2007, 20 (07) : 601 - 606
[8] Spectroscopic evidence for a surface layer in CuInSe2:Cu deficiency
Han, Sung-Ho
Hasoon, Falah S.
Hermann, Allen M.
Levi, Dean H.
[J]. APPLIED PHYSICS LETTERS, 2007, 91 (02)
[9] A round table discussion on MgB2 toward a wide market or a niche production?: A summary
Iwasa, Yukikazu
Larbalestier, David C.
Okada, Michiya
Penco, Roberto
Sumption, Michael D.
Xi, Xiaoxing
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2006, 16 (02) : 1457 - 1464
[10] Transport current improvements of in situ MgB2 tapes by the addition of carbon nanotubes, silicon carbide or graphite
Kovac, P.
Husek, I.
Skakalova, V.
Meyer, J.
Dobrocka, E.
Hirscher, M.
Roth, S.
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2007, 20 (01) : 105 - 111

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