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Pàgina inicial > Articles > Articles publicats > Flux-flow critical-state susceptibility of superconductors |
Data: | 2005 |
Resum: | The field-amplitude Hm and circular frequency ω dependent ac susceptibility, χ=χ'−jχ'', of a hard superconducting cylinder with flux-flow type current-voltage characteristic is calculated. A remarkable feature of the resultant χ(Hm,ω) is that both the maximum χ'', χ''m, and dlgHm(χ''m)/dlgω increase with increasing ω. This behavior is observed in actual Bi-2223/Ag tapes and YBa2Cu3O7−δ-coated conductors. Our result provides a useful tool to study the intergranular critical state in high-temperature superconductors. |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Conductors ; Josephson junctions ; Superconductors ; High temperature superconductors ; Josephson effect ; Critical currents ; Demagnetization ; High temperature superconductivity ; Rotating flows ; Superconductivity models |
Publicat a: | Applied physics letters, Vol. 86, Issue 24 (June 2005) , p. 242503/1-242503/3, ISSN 1077-3118 |
4 p, 246.1 KB |