Magnetic nanoparticles in MgB2: Vortex pinning, pair breaking and connectivity

被引：10
作者：
Babic, Emil [1 ]
Novosel, Nikolina [1 ]
Pajic, Damir [1 ]
Galic, Stipe [1 ]
Zadro, Kreso [1 ]
Drobac, Duro [2 ]
机构：
[1] Univ Zagreb, Fac Sci, Dept Phys, HR-10000 Zagreb, Croatia
[2] Inst Phys, HR-10000 Zagreb, Croatia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 400卷
关键词：
MgB2; wires; Magnetic nanoparticle doping; Flux pinning; SUPERCONDUCTING PROPERTIES; CRITICAL CURRENTS; DENSITY; FIELDS;
D O I：
10.1016/j.jmmm.2015.08.048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The results indicating magnetic flux pinning in MgB2 wires doped with three types of magnetic nanoparticles (MNP) are reported. The magnetic state of MNPs, both as-prepared and inside the MgB2 core, was determined with magnetization and ac susceptibility measurements. The competition between detrimental influence of doping (reduced connectivity, pair breaking) and enhanced flux pinning leads to deterioration of electromagnetic properties of doped wires at high MNP content, whereas light doping causes an enhancement of critical current density, J(c), and/or irreversibility field, B-irr, for all our MNPs. For Ni and dextrin coated NiFe2O4 MNPs the enhancement of J(c) was comparable to that achieved with the best nonmagnetic dopands. Detailed analysis indicates the contribution of magnetic flux pinning including the matching effects in flux pinning on MNPs. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：88 / 92
页数：5
相关论文
共 38 条
  • [1] Kinetics of magnetite nanoparticles formation in a one step low temperature hydrothermal process
    Ahmadi, Reza
    Masoudi, Afshin
    Hosseini, Hamid Reza Madaah
    Gu, Ning
    [J]. CERAMICS INTERNATIONAL, 2013, 39 (05) : 4999 - 5005
  • [2] Flux pinning in nanoparticle doped MgB2/CU tapes
    Babic, E.
    Kusevic, I.
    Husnjak, O.
    Soltanian, S.
    Wang, X. L.
    Dou, S. X.
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 (589-590): : 589 - 590
  • [3] High-field superconductivity in alloyed MgB2 thin films -: art. no. 012504
    Braccini, V
    Gurevich, A
    Giencke, JE
    Jewell, MC
    Eom, CB
    Larbalestier, DC
    Pogrebnyakov, A
    Cui, Y
    Liu, BT
    Hu, YF
    Redwing, JM
    Li, Q
    Xi, XX
    Singh, RK
    Gandikota, R
    Kim, J
    Wilkens, B
    Newman, N
    Rowell, J
    Moeckly, B
    Ferrando, V
    Tarantini, C
    Marré, D
    Putti, M
    Ferdeghini, C
    Vaglio, R
    Haanappel, E
    [J]. PHYSICAL REVIEW B, 2005, 71 (01)
  • [4] Critical fields and critical currents in MgB2
    Caplin, AD
    Bugoslavsky, Y
    Cohen, LF
    Cowey, L
    Driscoll, J
    Moore, J
    Perkins, GK
    [J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2003, 16 (02) : 176 - 182
  • [5] Significant improvement of flux pinning and irreversibility field of nano-Ho2O3 doped MgB2
    Cheng, C.
    Zhao, Y.
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 463 : 220 - 224
  • [6] Nano-Ni addition to MgB2: effects on the superconducting properties
    de Lima, O. F.
    Vieira, K. B.
    Moschim, E.
    Awana, V. P. S.
    Kishan, H.
    [J]. JOURNAL OF MATERIALS SCIENCE, 2010, 45 (18) : 4929 - 4933
  • [7] Flux-pinning and inhomogeneity in MgB2/Fe wires
    Husnjak, O.
    Babic, E.
    Kusevic, I.
    Wang, X. L.
    Soltanian, S.
    Dou, S. X.
    [J]. SOLID STATE COMMUNICATIONS, 2007, 143 (8-9) : 412 - 415
  • [8] THE HALL-EFFECT AND THE CONDUCTION ELECTRON-DENSITY IN NI-BASED AMORPHOUS-ALLOYS
    IVKOV, J
    BABIC, E
    LIEBERMANN, HH
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (43) : 8591 - 8598
  • [9] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K
    Kamihara, Yoichi
    Watanabe, Takumi
    Hirano, Masahiro
    Hosono, Hideo
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) : 3296 - +
  • [10] Origin of Surface Canting within Fe3O4 Nanoparticles
    Krycka, K. L.
    Borchers, J. A.
    Booth, R. A.
    Ijiri, Y.
    Hasz, K.
    Rhyne, J. J.
    Majetich, S. A.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 113 (14)
1234