Quantitative Control of Surface Pinning in a Low-κ Type II Alloy
- 1 May 1971
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 42 (6) , 2322-2327
- https://doi.org/10.1063/1.1660543
Abstract
Quantitative control of surface pinning in the case of In–2% Bi foils was achieved by pressing diffraction gratings into the foil surfaces. The resulting grooves were effective pinners when they were 8.4ξ or wider and ineffective when 4ξ or narrower; the critical Lorentz force for flux flow was consistent with simple static calculations based on the groove geometry. No pinning occurred for flux flow along the grooves. Near Hc2, the strength of pinning decreased linearly with H, and was essentially constant at lower fields. The Jc(H) peak effect was found to depend on pinner spacing.This publication has 10 references indexed in Scilit:
- Surface Nucleation at Abraded Superconductor SurfacesPhysical Review Letters, 1969
- Surface Nucleation and Boundary Conditions in SuperconductorsPhysical Review Letters, 1969
- Hysteresis in Superconductors. III. Effect of Surface Energies on the Shielding and Field-Retaining Properties of Hollow Cylinders of Type-I SuperconductorsPhysical Review B, 1968
- The peak effect and the clustering of dissolved oxygen in superconducting NbPhysics Letters A, 1968
- Flux pinning by grain boundaries in a type II superconductorScripta Metallurgica, 1968
- Surface Dependence of the Critical Pinning Current Density in Type-II Superconducting FoilsPhysical Review B, 1967
- On the concept of pinning force in type II superconductorsPhysics Letters A, 1967
- Hysteresis in Superconductors. II. Experimental Tests for Critical StatesPhysical Review B, 1967
- Structure of Superconductive Vortices near a Metal-Air InterfaceJournal of Applied Physics, 1966
- Surface Effects in the Mixed Superconducting StatePhysical Review B, 1965