Longitudinal magnetic field increases critical current in superconducting strip

Brandt, Ernst Helmut; Mikitik, G. P.

doi:10.1088/1742-6596/150/5/052024

Cited by 2 publications

(1 citation statement)

References 8 publications

(15 reference statements)

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“…However, these simulations neglect flux-cutting effects, while in our observations they appear to be crucial. Also, the enhancement of the critical current by the in-plane field was explained in these simulations by an effective increase of the length of vortices tilted from the plate normal (J c =J c 0 /cosα, α-tilt angle) [48,51], whereas we detect strongly enhanced currents only at flux fronts between crossing vortices.…”

Section: Brief Review Of General Critical State Models (Gcsm)supporting

confidence: 51%

Flux cutting in high-Tcsuperconductors

et al. 2015

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We performed magneto-optical study of flux distributions in a YBCO crystal under various applied crossed-field orientations to elucidate the complex nature of magnetic flux cutting in superconductors. Our study reveals unusual vortex patterns induced by the interplay between flux-cutting and vortex pinning. We observe strong flux penetration anisotropy of the normal flux B ⊥ in the presence of an in-plane field H || and associate the modified flux dynamics with staircase structure of tilted vortices in YBCO and the flux-cutting process.We demonstrate that flux-cutting can effectively delay vortex entry in the direction transverse to H || . Finally, we elucidate details of the vortex-cutting and reconnection process using time-dependent Ginzburg-Landau simulations.

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Section: Brief Review Of General Critical State Models (Gcsm)supporting

confidence: 51%

Flux cutting in high-Tcsuperconductors

et al. 2015

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Critical current studies of a HTS rectangular coil

Zhong

Chudý

Zhang

et al. 2017

Physica C: Superconductivity and its Applications

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Nowadays, many high-field magnets take advantage of the superior properties of superconductors. The superconducting square coil, a promising alternative for building Helmholtz coil has aroused great interest. This paper focuses on the critical current angular dependence of a superconducting square coil. The critical current of the entire coil and two selected strands under different magnitudes and orientations of external magnetic fields have been measured. The critical regions of the coil in different angular regimes were determined. A better understanding of the in-field performance of superconducting square coil is obtained.

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Longitudinal magnetic field increases critical current in superconducting strip

Cited by 2 publications

References 8 publications

Flux cutting in high-Tcsuperconductors

Flux cutting in high-Tcsuperconductors

Critical current studies of a HTS rectangular coil

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