Silver clad wires of R1Ba2Cu3O7−x (R=Y, Gd, Sm, Dy and Ho) have been fabricated following the powder-in-tube method and cold-rolling. The critical current densityJc at 77 K and zero magnetic field is restricted to 66 A.cm−2. In a separate experiment we have studied the effect of silver sheath thickness onJc of the Y1Ba2Cu3O7−x wires. Interestingly,Jc is higher for larger sheath thickness indicating that large sheath thickness prevents oxygen loss during sintering. Uniaxial pressing of the wires into flat tapes results in an increase of theJc. MaximumJx is, however, limited to 169 A.cm−2. No grain alignment is found in the core material of our wires which is essential for highJc. Several options are being tried.
Volume 43, 2020
Continuous Article Publishing mode
Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
Click here for Editorial Note on CAP Mode