Influence of crystalline boron powders on superconducting properties of C-doped internal Mg diffusion processed MgB2 wires

被引：18

作者：

Wang, Dongliang ^{[1
]}

Zhang, Xianping ^{[1
]}

Tang, Shaopu ^{[1
]}

Xu, Da ^{[1
]}

Yao, Chao ^{[1
]}

Dong, Chiheng ^{[1
]}

Xu, Zhongtang ^{[1
]}

Ma, Yanwei ^{[1
]}

Oguro, Hidetoshi ^{[2
]}

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：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2015年 / 28卷 / 10期

基金：

中国国家自然科学基金;

关键词：

MgB2; wires; internal Mg diffusion; crystalline boron powders; carbon doping; transport properties; CRITICAL-CURRENT DENSITY; HIGH-PERFORMANCE;

D O I：

10.1088/0953-2048/28/10/105013

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Monofilament MgB2/Fe wires or tapes were fabricated with two different purity crystalline boron powders, using internal magnesium diffusion (IMD) and in situ powder-in-tube (PIT) processes. To evaluate which method was more insensitive to the purity of the boron powders, a sensitivity factor was used. It was found that the IMD process was less sensitive to the purity of the boron powders, compared to the PIT method. Furthermore, J(c) values of the IMD-processed wires were higher than those of the PIT-processed samples. The reduced porosity and hence the increased density in the IMD-processed samples was thought to be the main reason. Although a number of B-rich particles remained in the MgB2 region, a layer J(c) as high as 4.8 x 10(4) A cm(-2) at 4.2 K and 10 T was still obtained in the IMD-processed wire, which was comparable to that of IMD-processed wires fabricated using amorphous boron powders.

引用

页数：10

共 47 条

[1] Strong influence of boron precursor powder on the critical current density of MgB2 [J].

Chen, SK ;

Yates, KA ;

Blamire, MG ;

MacManus-Driscoll, JL .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2005, 18 (11) :1473-1477

[2] 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

[3] Magnetic properties and critical currents of MgB2 [J].

Eisterer, M. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2007, 20 (12) :R47-R73

[4] Neutron irradiation of SiC doped and magnesium rich MgB2 wires [J].

Eisterer, Michael ;

Schoeppl, K. Robert ;

Weber, Harald W. ;

Sumption, Mike D. ;

Bhatia, Mohit .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2007, 17 (02) :2814-2817

[5] Simultaneous addition of B4C+SiC to MgB2 wires and consequences for Jc and Birr [J].

Fluekiger, Rene ;

Lezza, Paola ;

Cesaretti, Marco ;

Senatore, Carmine ;

Gladyshevskii, Roman .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2007, 17 (02) :2846-2849

[6] Strong enhancement of Jc and Birr in binary in situ MgB2 wires after cold high pressure densification [J].

Flukiger, R. ;

Hossain, M. S. A. ;

Senatore, C. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (08)

[7] Simultaneous introduction of scattering and pinning in organic rare-earth salt doped MgB2 tapes [J].

Gao, Zhaoshun ;

Wang, Dongliang ;

Zhang, Xianping ;

Ma, Yanwei ;

Awaji, S. ;

Nishijima, G. ;

Watanabe, K. ;

Fluekiger, R. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (04)

[8] Advancements in the reactive liquid Mg infiltration technique to produce long superconducting MgB2 tubular wires [J].

Giunchi, G. ;

Ripamonti, G. ;

Perini, E. ;

Cavallin, T. ;

Bassani, E. .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2007, 17 (02) :2761-2765

[9] High performance new MgB2 superconducting hollow wires [J].

Giunchi, G ;

Ceresara, S ;

Ripamonti, G ;

Di Zenobio, A ;

Rossi, S ;

Chiarelli, S ;

Spadoni, M ;

Wesche, R ;

Bruzzone, PL .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2003, 16 (02) :285-291

[10] Influence of the milling energy transferred to the precursor powder on the microstructure and the superconducting properties of MgB2 wires [J].

Haessler, W. ;

Hermann, H. ;

Herrmann, M. ;

Rodig, C. ;

Aubele, A. ;

Schmolinga, L. ;

Sailer, B. ;

Holzapfel, B. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2013, 26 (02)

← 1 2 3 4 5 →