TY - JOUR
T1 - Alternating current loss in a cylinder with power-law current-voltage characteristic
AU - Chen, D. X.
AU - Gu, C.
PY - 2005/9/13
Y1 - 2005/9/13
N2 - 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.
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.
UR - https://www.scopus.com/pages/publications/24344469175
U2 - 10.1063/1.1947912
DO - 10.1063/1.1947912
M3 - Article
SN - 0003-6951
VL - 86
SP - 1
EP - 3
JO - Applied physics letters
JF - Applied physics letters
M1 - 252504
ER -