Title :
Low contact-resistivity junctions to ceramic superconductors
Author :
Maley, M.P. ; Willis, J.O. ; Katz, J.D. ; Castro, R.G. ; Aikin, R.M.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
fDate :
3/1/1989 12:00:00 AM
Abstract :
A report is presented on the development of a plasma-arc spray process for the application of low-resistivity silver contact junctions onto YBa2Cu3O7 sintered ceramic materials. The contact resistances decrease montonically with decreasing temperature and are typically ~10-8 Ω-cm2 at 75 K. I-V characteristics are linear up to a critical current density that agrees with that of the underlying superconducting material. Advantages over other contact methods include ease of application, absence of any postprocessing treatment, and applicability to large areas and arbitrary shapes
Keywords :
barium compounds; ceramics; contact resistance; critical current density (superconductivity); high-temperature superconductors; plasma arc sprayed coatings; silver; yttrium compounds; 75 K; YBa2Cu3O7-Ag; contact resistances; critical current density; high temperature superconductivity; plasma-arc spray process; sintered ceramic materials; Ceramics; Critical current density; Plasma applications; Plasma materials processing; Plasma temperature; Shape; Silver; Superconducting materials; Superconductivity; Thermal spraying;
Journal_Title :
Magnetics, IEEE Transactions on
