Alternating current loss in a cylinder with power-law current-voltage characteristic

D. X. Chen; C. Gu

doi:https://doi.org/10.1063/1.1947912

Alternating current loss in a cylinder with power-law current-voltage characteristic

D. X. Chen, C. Gu

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

14 Citations (Scopus)

Abstract

The transport ac loss Q in a superconducting cylinder of radius a with a power-law current-voltage characteristic E=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 Q measurements and their interpretation. © 2005 American Institute of Physics.

Original language	English
Article number	252504
Pages (from-to)	1-3
Journal	Applied Physics Letters
Volume	86
DOIs	https://doi.org/10.1063/1.1947912
Publication status	Published - 13 Sep 2005

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AB - The transport ac loss Q in a superconducting cylinder of radius a with a power-law current-voltage characteristic E=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 Q measurements and their interpretation. © 2005 American Institute of Physics.

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Alternating current loss in a cylinder with power-law current-voltage characteristic

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