Electrical performance of single domain YBa2Cu3Oy fabrics

The electrical performance of a new form of superconducting YBa2Cu3Oy fabri cs prepared in a self-supporting form is discussed. The single domain Y123 fabrics processed by an infiltration process from precursor Y2O3 cloths hav e dimensions of thick films and posses the structure replica of precursor Y 2O3 fabrics. The electrical properties of the fabrics determined by dc-susc eptibility and dc-measurements are discussed. The T-c of the fabrics from a c-susceptibility measurements are found to be around 90 K. The transport J( c) measurements in self-field showed the transition between the superconduc ting state and flux-flow regime to occur at a critical current density (J(c )) exceeding 5.5 x 10(4) A/cm(2) at 77 K. Quench tests at 77 K using pulsed currents up to five times J(c) with a duration of 25 ms are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.