Effect of the Temperature, External Magnetic Field, and Transport Current on Electrical Properties, Vortex Structure Evolution Processes, and Phase Transitions in Subsystems of Superconducting Grains and “Weak Links” of Granular Two-Level High-Temperature Superconductor YBa2Cu3O7–δ

Derevyanko, V. V.; Sukhareva, T. V.; Finkel, V. A.

doi:10.1134/s1063783418030083

Cited by 16 publications

(2 citation statements)

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“…When describing the magnetic and electric transport properties of PSs, the model of a two-level superconductor is used [42][43][44][45][46][47][48]. Inhomogeneous and polycrystalline superconductors are considered in the model as a Josephson medium [49][50][51] consisting of superconducting regions and weak links between them.…”

Section: Trajectories Of Current In Porous Superconductorsmentioning

confidence: 99%

“…With increasing temperature or magnetic field, the critical values of both intragranular and intergranular currents decrease, but the corresponding functional dependences of the critical currents of these subsystems are different, since they are associated with different physical processes [48,55]. The critical density J cJ is determined by the parameters of the grain boundary and the mutual orientation of anisotropic granules [44].…”

Section: Trajectories Of Current In Porous Superconductorsmentioning

confidence: 99%

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Highly Porous Superconductors: Synthesis, Research, and Prospects

Gokhfeld

Koblischka

Koblischka-Veneva

2020

Phys. Metals Metallogr.

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This paper gives a review of studies of superconductors with a porosity above 50%. The pores in such superconducting materials provide refrigerant penetration, efficient heat dissipation and stable operation. Methods for the synthesis of the main groups of porous superconductors are described. The results of studies of the structural, magnetic, and electrical transport properties are presented, and the features of the current flow through porous superconductors of various types are considered.

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