TY - JOUR
T1 - Scaling laws for pinning forces in inhomogeneous superconductors
AU - Alterovitz, Samuel A.
AU - Woollam, John A.
N1 - Funding Information:
t Part of this work was performed at the Francis Bitter National Magnet Laboratory, supported by the U.S.A. National Science Foundation. $ United States National Research Council Senior Research Associate, on leave from the Physics Department, Tel-Aviv University, Tel-Aviv, Israel.
PY - 1978/12
Y1 - 1978/12
N2 - The lack of scaling of flux pinning forces found in some superconductors is discussed. As examples, data from three systems of superconductors is analysed: (1) Nb3Ge and pseudobinaries based on Nb3Ge made by chemical-vapour deposition; (2) sputtered Chevrel-phase films of PbMo6S8; and (3) sputtered Chevrel-phase films of CuzMo6S8(1·6 ≤ x ≤ 2·5). The lack of scaling in all three systems is explained by assuming sample inhomogeneity. Moreover, it is found that modified scaling laws are quantitatively obeyed if redefined pinning forces or redefined magnetic fields are used. The redefining procedure depends on the nature of the inhomogeneity particular to each if the three systems investigated.
AB - The lack of scaling of flux pinning forces found in some superconductors is discussed. As examples, data from three systems of superconductors is analysed: (1) Nb3Ge and pseudobinaries based on Nb3Ge made by chemical-vapour deposition; (2) sputtered Chevrel-phase films of PbMo6S8; and (3) sputtered Chevrel-phase films of CuzMo6S8(1·6 ≤ x ≤ 2·5). The lack of scaling in all three systems is explained by assuming sample inhomogeneity. Moreover, it is found that modified scaling laws are quantitatively obeyed if redefined pinning forces or redefined magnetic fields are used. The redefining procedure depends on the nature of the inhomogeneity particular to each if the three systems investigated.
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U2 - 10.1080/13642817808246338
DO - 10.1080/13642817808246338
M3 - Article
AN - SCOPUS:0018107453
SN - 1364-2812
VL - 38
SP - 619
EP - 634
JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
IS - 6
ER -