Weakening thickness dependence of critical current density in YBa(2)Cu(3)O(7-x) films using nanotube pore insertion

作者：Wang Xiang^*; Dibos Alan; Wu J Z

来源：Physical Review B, 2008, 77(14): 144525.

DOI：10.1103/PhysRevB.77.144525

YBa(2)Cu(3)O(7-x) films with nanotube pores (YBCO/NTPs) aligned along normal of the film have been fabricated with thickness ranging from 0.1 to 1.2 mu m. When compared to YBCO films without NTPs, YBCO/NTP samples show much reduced thickness dependence of the critical current density J(c), in addition to the overall higher J(c) values, in magnetic fields below the matching field of the NTPs. These results suggest that the through-thickness NTPs may provide an enhanced pinning force per vortex length (F(p)) which remains a constant at various thicknesses.

• 出版日期2008-4