Calculation of the volume pinning force in MgB2 superconductors

被引:91
作者
Eisterer, M. [1 ]
机构
[1] Vienna Univ Technol, Austrian Univ, Inst Atom, A-1020 Vienna, Austria
来源
PHYSICAL REVIEW B | 2008年 / 77卷 / 14期
关键词
D O I
10.1103/PhysRevB.77.144524
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The field dependence of the volume pinning force in anisotropic polycrystalline superconductors is calculated for various well established pinning models. The anisotropy substantially changes the field dependence of the volume pinning force and shifts its maximum to significantly lower reduced fields. A scaling procedure that allows the identification of the dominant pinning mechanism from the peak position is proposed.
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页数:5
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共 43 条
[1]   Temperature and field dependence of the anisotropy of MgB2 -: art. no. 167004 [J].
Angst, M ;
Puzniak, R ;
Wisniewski, A ;
Jun, J ;
Kazakov, SM ;
Karpinski, J ;
Roos, J ;
Keller, H .
PHYSICAL REVIEW LETTERS, 2002, 88 (16) :1670041-1670044
[2]   Specific heat of single crystal MgB2:: A two-band superconductor with two different anisotropies -: art. no. 257001 [J].
Bouquet, F ;
Wang, Y ;
Sheikin, I ;
Plackowski, T ;
Junod, A ;
Lee, S ;
Tajima, S .
PHYSICAL REVIEW LETTERS, 2002, 89 (25)
[3]   Temperature-dependent Hc2 anisotropy in MgB2 as inferred from measurements on polycrystals -: art. no. 212501 [J].
Bud'ko, SL ;
Canfield, PC .
PHYSICAL REVIEW B, 2002, 65 (21) :1-3
[4]   Enhancement of flux pinning and high-field critical current density in carbon-alloyed MgB2 thin films [J].
Chen, J. ;
Ferrando, V. ;
Orgiani, P. ;
Pogrebnyakov, A. V. ;
Wilke, R. H. T. ;
Betts, J. B. ;
Mielke, C. H. ;
Redwing, J. M. ;
Xi, X. X. ;
Li, Qi .
PHYSICAL REVIEW B, 2006, 74 (17)
[5]   Effects of two-band superconductivity on the flux-line lattice in magnesium diboride [J].
Cubitt, R ;
Eskildsen, MR ;
Dewhurst, CD ;
Jun, J ;
Kazakov, SM ;
Karpinski, J .
PHYSICAL REVIEW LETTERS, 2003, 91 (04)
[6]   FLUX PINNING MECHANISMS IN TYPE-II SUPERCONDUCTORS [J].
DEWHUGHES, D .
PHILOSOPHICAL MAGAZINE, 1974, 30 (02) :293-305
[7]   Magnetic properties and critical currents of MgB2 [J].
Eisterer, M. .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2007, 20 (12) :R47-R73
[8]   Reversible magnetization of the two-band MgB2 superconductor:: A phenomenological approach -: art. no. 134525 [J].
Eisterer, M ;
Zehetmayer, M ;
Weber, HW ;
Karpinski, J .
PHYSICAL REVIEW B, 2005, 72 (13)
[9]   Influence of the upper critical-field anisotropy on the transport properties of polycrystalline MgB2 -: art. no. 033906 [J].
Eisterer, M ;
Krutzler, C ;
Weber, HW .
JOURNAL OF APPLIED PHYSICS, 2005, 98 (03)
[10]   Current percolation and anisotropy in polycrystalline MgB2 -: art. no. 247002 [J].
Eisterer, M ;
Zehetmayer, M ;
Weber, HW .
PHYSICAL REVIEW LETTERS, 2003, 90 (24) :4