Critical Current Density in a Magnetic Field

Magnetic Field Dependence of the Transport Critical Current Density in the Superconductor Family ReBa2Cu3O7-x

The magnetic field dependence of the transport critical current density has been investigated at temperatures of 78K and 68K in bulk polycrystalline samples of the hightemperature superconductor ReBa2Cu3O7-x, where Re (rare earth) = Y (yttrium), Er (erbium), Yb (ytterbium), Ho (holmium), and Dy (dysprosium). Samples were sintered in 1⁄4 inch pellet form after the conventional ceramic processing...

Longitudinal magnetic field increases critical current in superconducting strip

The critical state of the vortex lattice in a thin strip is considered for the case when first a perpendicular magnetic field is applied, then a longitudinal field, and then again the perpendicular field is increased. This longitudinal field can strongly enhance the critical currents in the strip since the vortices are inclined and the currents flow in the strip plane.

Field mapping measurements to determine spatial and field dependence of critical current density in YBCO tapes

In this paper a measurement method that allows the determination of the critical current density of superconducting tape from field mapping measurements is presented. This contact-free method allows obtaining characteristics of the superconductor as a function of the position and of the applied flux density. With some modifications, this technique can be used for reel-to-reel measurements. The ...

High Critical Current Density Superconductivity

This project was focused on a basic scientific problem, one that is at the heart of application and development of superconductivity for efficient energy usage. This is improvement in high current density which can only be achieved by learning to pin vortices to the physical structure of its underlying superconducting material. Quantized vortices are the tornado of electrical supercurrents, ubi...

High Critical Current Density MgB