Ceramic wire and coil made of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} high-temperature superconductor with a critical current density up to 75 A {center_dot}cm{sup {minus}2} at 77 K

Processing parameters are refined and a route is found for fabricating wires, coils, and other lengthy electrotechnical elements form high-temperature superconducting ceramic YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}. The superconducting transition temperature of around 90 K and a critical current density in the terrestrial magnetic field of 35-75 A {center_dot} cm{sup {minus}2} at 77 K characterize the performance of the wire.