The Circulation Radius and Critical Current Density in Type II Superconductors

The Circulation Radius and Critical Current Density in Type II Superconductors

A method is proposed for estimating the length scale of currents circulating in superconductors. The estimated circulation radius is used for determining the critical current density on the basis of magnetic measurements. The obtained formulas are applicable to samples with negligibly small demagnet...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Technical physics letters 2019, Vol.45 (1), p.1-3
1. Verfasser: Gokhfeld, D. M.
Format: Artikel
Sprache:eng
Schlagworte:
Classical and Continuum Physics
Critical current density
Demagnetization
Magnetic measurement
Physics
Physics and Astronomy
Polycrystals
YBCO superconductors
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A method is proposed for estimating the length scale of currents circulating in superconductors. The estimated circulation radius is used for determining the critical current density on the basis of magnetic measurements. The obtained formulas are applicable to samples with negligibly small demagnetizing factors and to polycrystalline superconductors. The proposed method has been verified using experimental magnetization loops measured for polycrystalline YBa 2 Cu 3 O 7 – δ and Bi 1.8 Pb 0.3 Sr 1.9 Ca 2 Cu 3 O x superconductors.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785019010243