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

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