Nanoparticles of the superconductor MgB2:: structural characterization and in situ study of synthesis kinetics

被引:19
作者
Cui, CX
Liu, DB
Shen, YT
Sun, JB
Meng, FB
Wang, R
Liu, SJ
Greer, AL
Chen, SK
Glowacki, BA
机构
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
基金
中国国家自然科学基金;
关键词
crystal growth; HREM observation; nanometer particles; reaction kinetics; reaction synthesis;
D O I
10.1016/j.actamat.2004.08.033
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Single-crystal MgB2 nanoparticles, with diameters in the range 20-100 nm, have been synthesized in situ in the sample chamber of an X-ray diffractometer. The reaction kinetics are analyzed and related to the atomic-level structure of the particles as observed by high-resolution electron microscopy. Synthesis conditions may have a significant influence on microstructure and superconducting properties. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:5757 / 5760
页数:4
相关论文
共 18 条
[1]   Boron isotope effect in superconducting MgB2 [J].
Bud'ko, SL ;
Lapertot, G ;
Petrovic, C ;
Cunningham, CE ;
Anderson, N ;
Canfield, PC .
PHYSICAL REVIEW LETTERS, 2001, 86 (09) :1877-1880
[2]   Vortex dynamics in superconducting MgB2 and prospects for applications [J].
Bugoslavsky, Y ;
Perkins, GK ;
Qi, X ;
Cohen, LF ;
Caplin, AD .
NATURE, 2001, 410 (6828) :563-565
[3]   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
[4]   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
[5]   Thermodynamic and transport properties of superconducting Mg10B2 [J].
Finnemore, DK ;
Ostenson, JE ;
Bud'ko, SL ;
Lapertot, G ;
Canfield, PC .
PHYSICAL REVIEW LETTERS, 2001, 86 (11) :2420-2422
[6]   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
[7]   HIGH-TC SUPERCONDUCTORS - COMPOSITE WIRE FABRICATION [J].
JIN, S ;
SHERWOOD, RC ;
VANDOVER, RB ;
TIEFEL, TH ;
JOHNSON, DW .
APPLIED PHYSICS LETTERS, 1987, 51 (03) :203-204
[8]   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
[9]  
Kortus J, 2001, PHYS REV LETT, V86, P4656, DOI 10.1103/PhysRevLett.86.4656
[10]   Strongly linked current flow in polycrystalline forms of the superconductor MgB2 [J].
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 .
NATURE, 2001, 410 (6825) :186-189