NDLI: The Maximum Levitation Force of High-T $

Content Provider	Springer Nature Link
Author	Zhao, Xian Feng Liu, Yuan
Copyright Year	2007
Abstract	In this paper we present the dependence of the maximum levitation force (F z max ) of a high-T $_{ c }$ superconductor (HTS) on the structural factors of high-T $_{ c }$ superconducting systems based on the Bean critical state model and Ampère’s law. A transition point of the surface magnetic field (B $_{ s }$) of a permanent magnet (PM) is found at which the relation between F z max and B $_{ s }$ changes: while the surface magnetic field is less than the transition value the dependence is subject to a nonlinear function, otherwise it is a linear one. The two different relations are estimated to correspond to partial penetration of the shielding currents inside the superconductor below the transition point and complete penetration above it respectively. The influence of geometric properties of superconductors on the dependence is also investigated. In addition, the relation between F z max and the critical current density (J $_{ c }$) of the HTS is discussed. The maximum levitation force saturates at high J $_{ c }$. An optimum function of the J $_{ c }$ and the B $_{ s }$ is presented in order to achieve large F z max .
Starting Page	200
Ending Page	208
Page Count	9
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	149
Issue Number	3-4
e-ISSN	15737357
Language	English
Publisher	Springer US
Publisher Date	2007-08-21
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Maximum levitation force Structural factors A transition value Shielding current penetration Magnetic properties including vortex structures and related phenomena Properties of superconductors Superconducting device characterization, design, and modeling Magnetism, Magnetic Materials Characterization and Evaluation of Materials Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science

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