Superconducting MgB2 nanohelices grown on various substrates

被引：39
作者：
Nath, Manashi [1 ]
Parkinson, B. A. [1 ]
机构：
[1] Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 37期
关键词：
D O I：
10.1021/ja072475x
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Masses of superconducting MgB2 nanohelices and nanowires were grown on various substrates by reaction of Mg metal with diborane (B2H6). The growth occurs via a self-catalyzed vapor-liquid-solid (VLS) mechanism. It is postulated that strain in the wires due to the presence of screw dislocations is responsible for the helical morphology. The several hundred micrometer long helices have a range of diameters and pitch and are made up of wires from 50 to 200 nm in diameter. Magnetic measurements indicate that the helices superconduct below similar to 32 K. These nanohelices could be used to manufacture highly flexible superconducting cables or '.nanosolenoids."
引用
收藏
页码：11302 / +
页数：3
相关论文
共 24 条
  • [1] A FORMATION MECHANISM FOR CATALYTICALLY GROWN HELIX-SHAPED GRAPHITE NANOTUBES
    AMELINCKX, S
    ZHANG, XB
    BERNAERTS, D
    ZHANG, XF
    IVANOV, V
    NAGY, JB
    [J]. SCIENCE, 1994, 265 (5172) : 635 - 639
  • [2] Thermodynamic and transport properties of superconducting Mg10B2
    Finnemore, DK
    Ostenson, JE
    Bud'ko, SL
    Lapertot, G
    Canfield, PC
    [J]. PHYSICAL REVIEW LETTERS, 2001, 86 (11) : 2420 - 2422
  • [3] Conversion of zinc oxide nanobelts into superlattice-structured nanohelices
    Gao, PX
    Ding, Y
    Mai, WJ
    Hughes, WL
    Lao, CS
    Wang, ZL
    [J]. SCIENCE, 2005, 309 (5741) : 1700 - 1704
  • [4] High critical currents in iron-clad superconducting MgB2 wires
    Jin, S
    Mavoori, H
    Bower, C
    van Dover, RB
    [J]. NATURE, 2001, 411 (6837) : 563 - 565
  • [5] High transport critical current density obtained for powder-in-tube-processed MgB2 tapes and wires using stainless steel and Cu-Ni tubes
    Kumakura, H
    Matsumoto, A
    Fujii, H
    Togano, K
    [J]. APPLIED PHYSICS LETTERS, 2001, 79 (15) : 2435 - 2437
  • [6] Strongly linked current flow in polycrystalline forms of the superconductor MgB2
    Larbalestier, DC
    Cooley, LD
    Rikel, MO
    Polyanskii, AA
    Jiang, J
    Patnaik, S
    Cai, XY
    Feldmann, DM
    Gurevich, A
    Squitieri, AA
    Naus, MT
    Eom, CB
    Hellstrom, EE
    Cava, RJ
    Regan, KA
    Rogado, N
    Hayward, MA
    He, T
    Slusky, JS
    Khalifah, P
    Inumaru, K
    Haas, M
    [J]. NATURE, 2001, 410 (6825) : 186 - 189
  • [7] Strain effect on the critical superconducting temperature of MgB2
    Liao, XZ
    Serquis, A
    Zhu, YT
    Peterson, DE
    Mueller, FM
    Xu, HF
    [J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2004, 17 (08) : 1026 - 1030
  • [8] Direct pyrolysis method for superconducting crystalline MgB2 nanowires
    Ma, RZ
    Bando, Y
    Mori, T
    Golberg, D
    [J]. CHEMISTRY OF MATERIALS, 2003, 15 (16) : 3194 - 3197
  • [9] Nanospring formation - unexpected catalyst mediated growth
    McIlroy, DN
    Alkhateeb, A
    Zhang, D
    Aston, DE
    Marcy, AC
    Norton, MG
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (12) : R415 - R440
  • [10] Nanosprings
    McIlroy, DN
    Zhang, D
    Kranov, Y
    Norton, MG
    [J]. APPLIED PHYSICS LETTERS, 2001, 79 (10) : 1540 - 1542
123