High T_(c) superconducting YBCO films have been fabricated by in-situ pulsed laser ablation method.The substrates used were SrTiO_(3)(100)and were heated to 650℃ during deposition.X-ray diffraction results indicate t...High T_(c) superconducting YBCO films have been fabricated by in-situ pulsed laser ablation method.The substrates used were SrTiO_(3)(100)and were heated to 650℃ during deposition.X-ray diffraction results indicate that the as-deposited 6lms are highly oriented with c-axis perpendicular to the film surfaces.The critical currents were measured at 77.5 K under different magnetic fields from 0 up to 7 T by using dc four point method.The zero resistance temperature was 89 K and the highest critical current density was 2.5 × 10^(6) A/cm^(2) at 77.5 K under zero field.展开更多
文摘High T_(c) superconducting YBCO films have been fabricated by in-situ pulsed laser ablation method.The substrates used were SrTiO_(3)(100)and were heated to 650℃ during deposition.X-ray diffraction results indicate that the as-deposited 6lms are highly oriented with c-axis perpendicular to the film surfaces.The critical currents were measured at 77.5 K under different magnetic fields from 0 up to 7 T by using dc four point method.The zero resistance temperature was 89 K and the highest critical current density was 2.5 × 10^(6) A/cm^(2) at 77.5 K under zero field.
