Title :
Improving coated conductors
Author :
Hammerl, G. ; Bielefeldt, H. ; Leitenmeier, S. ; Schmehl, A. ; Weber, A. ; Schneider, C.W. ; Mannhart, J.
Author_Institution :
Inst. of Phys., Univ. of Augsburg, Germany
fDate :
6/1/2003 12:00:00 AM
Abstract :
Today´s coated conductor techniques are aimed to minimize by grain alignment the grain boundary problem of high-Tc superconductors. We present a new approach to enhance the critical current density of coated conductors, which is based on a modified microstructure of the substrate, to utilize grains with large aspect ratios. Calculations clearly show that by using such substrates critical current densities close to the intragrain Jc are possible.
Keywords :
critical current density (superconductivity); crystal microstructure; grain boundaries; high-temperature superconductors; superconducting tapes; superconducting thin films; coated conductors; critical current density; grain alignment; grain boundary problem; high temperature superconductors; modified microstructure; substrate; Conductors; Costs; Critical current; Critical current density; Doping; Fabrication; Grain boundaries; Helium; Microstructure; Superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.811913
