Single-crystalline superconducting MgB2 nanowires

被引：14

作者：

Jha, Alok K. ^{[1
]}

Khare, Neeraj ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, New Delhi 110016, India

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2009年 / 22卷 / 07期

关键词：

CRITICAL-CURRENT DENSITY; WIRES;

D O I：

10.1088/0953-2048/22/7/075017

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the synthesis of superconducting MgB2 nanowires using a two-step process involving the sol-gel technique and heat treatment in pure argon atmosphere at 820 degrees C. High resolution transmission electron microscopy revealed that MgB2 nanowires are single crystalline. The nanowires are 0.5-1.0 mu m long with diameters similar to 50-100 nm. Superconductivity in these nanowires has been confirmed by DC magnetization measurements indicating the superconducting transition temperature similar to 38 K.

引用

页数：3

共 17 条

[1] A new heat treatment to prepare high-quality polycrystalline and single crystal MgB2 in a single process [J].

Badr, MH ;

Ng, KW .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2003, 16 (06) :668-671

[2] The origin of the anomalous superconducting properties of MgB2 [J].

Choi, HJ ;

Roundy, D ;

Sun, H ;

Cohen, ML ;

Louie, SG .

NATURE, 2002, 418 (6899) :758-760

[3] High critical current density and enhanced irreversibility field in superconducting MgB2 thin films [J].

Eom, CB ;

Lee, MK ;

Choi, JH ;

Belenky, LJ ;

Song, X ;

Cooley, LD ;

Naus, MT ;

Patnaik, S ;

Jiang, J ;

Rikel, M ;

Polyanskii, A ;

Gurevich, A ;

Cai, XY ;

Bu, SD ;

Babcock, SE ;

Hellstrom, EE ;

Larbalestier, DC ;

Rogado, N ;

Regan, KA ;

Hayward, MA ;

He, T ;

Slusky, JS ;

Inumaru, K ;

Haas, MK ;

Cava, RJ .

NATURE, 2001, 411 (6837) :558-560

[4] Improved superconducting properties in nanocrystalline bulk MgB2 [J].

Gümbel, A ;

Eckert, J ;

Fuchs, G ;

Nenkov, K ;

Müller, KH ;

Schultz, L .

APPLIED PHYSICS LETTERS, 2002, 80 (15) :2725-2727

[5]

Ijima S., NATURE, V354, P56

[6] 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

[7] THE PREPARATION AND STRUCTURE OF MAGNESIUM BORIDE, MGB2 [J].

JONES, ME ;

MARSH, RE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1954, 76 (05) :1434-1436

[8] 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

[9] Fabrication of MgB2 nanowire and its superconductivity [J].

Lai, S. H. ;

Liu, S. C. ;

Lan, M. D. .

JOURNAL OF CRYSTAL GROWTH, 2007, 304 (02) :460-463

[10] Direct pyrolysis method for superconducting crystalline MgB2 nanowires [J].

Ma, RZ ;

Bando, Y ;

Mori, T ;

Golberg, D .

CHEMISTRY OF MATERIALS, 2003, 15 (16) :3194-3197

← 1 2 →