Title :
Development of Ag sheathed Bi-2223 multifilamentary tapes with MgO coated filaments
Author :
Lennikov, V. ; Caudevilla, H. ; Angurel, L.A. ; de la Fuente, G.F. ; Navarro, R.
Author_Institution :
Inst. de Ciencia de Mater. de Aragon, Zaragoza Univ., Spain
fDate :
6/1/1999 12:00:00 AM
Abstract :
A dip-coating process to obtain controlled, uniform coatings on silver sheathed Bi-2223 wires suitable for the fabrication of multifilamentary tapes is reported. Tapes with continuous fully connected MgO resistive barrier layers 1 to 17 /spl mu/m thick have been produced and characterized. The correlation between their microstructure, electric transport and magnetic properties has been analyzed. An effective reduction of the interfilamentary coupling with a minimum degradation of the tape performance has been obtained for 1 to 3 /spl mu/m thick barrier layers.
Keywords :
bismuth compounds; calcium compounds; ceramics; crystal microstructure; high-temperature superconductors; magnesium compounds; magnetic hysteresis; magnetic moments; multifilamentary superconductors; scanning electron microscopy; silver; sol-gel processing; strontium compounds; superconducting tapes; 1 to 17 micron; Ag sheathed Bi-2223 multifilamentary tapes; Ag-BiSrCaCuO; MgO; MgO coated filaments; MgO-AgBiSrCaCuO; dip-coating process; electric transport; fabrication; interfilamentary coupling; magnetic properties; microstructure; minimum degradation; thick barrier layers; Dip coating; Fabrication; High temperature superconductors; Magnetic properties; Microstructure; Multifilamentary superconductors; Silver; Superconducting epitaxial layers; Superconducting filaments and wires; Superconducting films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
