Critical current densities of powder-in-tube MgB2 tapes fabricated with nanometer-size Mg powder

被引：77

作者：

Yamada, H

Hirakawa, M

Kumakura, H

Matsumoto, A

Kitaguchi, H

机构：

[1] Cent Japan Railway Co, Div Gen Technol, Aichi 4850801, Japan

[2] Natl Inst Mat Sci, Superconducting Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 10期

关键词：

D O I：

10.1063/1.1667263

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We fabricated powder-in-tube MgB2/Fe tapes using a powder mixture of nanometer-size Mg and commercial amorphous B and investigated the transport properties. High-purity nanometer-size Mg powder was fabricated by applying the thermal plasma method. 5-10 mol % SiC powder doping was tried to enhance the J(c) properties. We found that the use of nanometer-size Mg powder was effective to increase the J(c) values. The transport J(c) values of the nondoped and 10 mol % SiC-doped tapes prepared with nanometer-size Mg powder reached 90 and 250 A/mm2 at 4.2 K and 10 T, respectively. These values were about five times higher than those of the tapes prepared with commercial Mg powder. (C) 2004 American Institute of Physics.

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页码：1728 / 1730

页数：3

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共 10 条

[1] Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SIC doping [J].

Dou, SX ;

Soltanian, S ;

Horvat, J ;

Wang, XL ;

Zhou, SH ;

Ionescu, M ;

Liu, HK ;

Munroe, P ;

Tomsic, M .

APPLIED PHYSICS LETTERS, 2002, 81 (18) :3419-3421

[2] High critical current density in iron-clad MgB2 tapes [J].

Fang, H ;

Padmanabhan, S ;

Zhou, YX ;

Salama, K .

APPLIED PHYSICS LETTERS, 2003, 82 (23) :4113-4115

[3] Preparation of MgB2 tapes using a nanocrystalline partially reacted precursor [J].

Fischer, C ;

Rodig, C ;

Hässler, W ;

Perner, O ;

Eckert, J ;

Nenkov, K ;

Fuchs, G ;

Wendrock, H ;

Holzapfel, B ;

Schultz, L .

APPLIED PHYSICS LETTERS, 2003, 83 (09) :1803-1805

[4] Enhancement of critical current densities of powder-in-tube processed MgB2 tapes by using MgH2 as a precursor powder [J].

Fujii, H ;

Togano, K ;

Kumakura, H .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (11) :1571-1576

[5] Superconductivity of powder-in-tube MgB2 wires [J].

Glowacki, BA ;

Majoros, M ;

Vickers, M ;

Evetts, JE ;

Shi, Y ;

McDougall, I .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2001, 14 (04) :193-199

[6] Large transport critical currents in unsintered MgB2 superconducting tapes [J].

Grasso, G ;

Malagoli, A ;

Ferdeghini, C ;

Roncallo, S ;

Braccini, V ;

Siri, AS ;

Cimberle, MR .

APPLIED PHYSICS LETTERS, 2001, 79 (02) :230-232

[7] High critical currents in iron-clad superconducting MgB2 wires [J].

Jin, S ;

Mavoori, H ;

Bower, C ;

van Dover, RB .

NATURE, 2001, 411 (6837) :563-565

[8] Critical current densities and irreversibility fields of MgB2 bulks [J].

Kumakura, H ;

Takano, Y ;

Fujii, H ;

Togano, K ;

Kito, H ;

Ihara, H .

PHYSICA C, 2001, 363 (03) :179-183

[9] High transport critical current density obtained for powder-in-tube-processed MgB2 tapes and wires using stainless steel and Cu-Ni tubes [J].

Kumakura, H ;

Matsumoto, A ;

Fujii, H ;

Togano, K .

APPLIED PHYSICS LETTERS, 2001, 79 (15) :2435-2437

[10] Large transport critical currents in dense Fe- and Ni-clad MgB2 superconducting tapes [J].

Suo, HL ;

Beneduce, C ;

Dhallé, M ;

Musolino, N ;

Genoud, JY ;

Flükiger, R .

APPLIED PHYSICS LETTERS, 2001, 79 (19) :3116-3118