Alternating current loss in a cylinder with power-law current-voltage characteristic
Chen, Du-Xing (Institució Catalana de Recerca i Estudis Avançats)
Gu, C. (Tsinghua University. Applied Superconductivity Research Center)
American Physical Society

Date:	2005
Abstract:	The transportac loss Q in a superconducting cylinder of radius a with a power-law current-voltage characteristicE=Ec∣J/Jc∣n as a function of current amplitude Im is numerically calculated for a set of given values of a,Jc, and frequency f at n=5, 10, 20, and 30. After deriving a scaling law and defining a critical frequency fc, the results can be converted and interpolated to those for any values of a, Jc, f, and 5 n 30. The "power-law" Q(Im) at f=fc is a better alternative of the critical-state Q(Im), used not only for describing the features of Q(Im,f) of high-temperature superconductors but also for planning Qmeasurements and their interpretation.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	High temperature superconductivity ; Superconductivity models ; Alternating current power transmission ; Electrical properties ; Critical currents ; Transport properties ; Creep measurement ; Electric measurements ; High temperature superjmn conductors
Published in:	Applied physics letters, Vol. 86, Issue 25 (Juny 2005) , p. 252504, ISSN 1077-3118

DOI: 10.1063/1.1947912

4 p, 257.1 KB

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