Transport and magnetic critical current normal to ab-plane for textured YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>
S Y Ding; J W Lin; X Jin; Zheng Yu; X X Yao; H L Mou; L Zhou; S Y Ding; Dept. of Phys., Nanjing Univ., China; J W Lin; Dept. of Phys., Nanjing Univ., China; X Jin; Dept. of Phys., Nanjing Univ., China; Zheng Yu; Dept. of Phys., Nanjing Univ., China; X X Yao; Dept. of Phys., Nanjing Univ., China; H L Mou; Dept. of Phys., Nanjing Univ., China; L Zhou; Dept. of Phys., Nanjing Univ., China
Журнал:
Superconductor Science and Technology
Дата:
1992-01-01
Аннотация:
The authors prepared YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>(YBCO) samples with large size in c axis by powder melt procession (PMP) and measured J<sub>c</sub><sup>c,ab</sup> electrically and magnetically. The J<sub>c</sub><sup>c,ab</sup> of 2*10<sup>4</sup>A/cm<sup>2</sup> and field dependence are obtained. The microstructure of the PMP samples was examined. The authors found the sample with fewer normal particles and more apparent cracks in the ab planes had smaller J<sub>c</sub><sup>c,ab</sup>. The influence of normal particle on crack and J<sub>c</sub> and the effect of pinning on anisotropy of J<sub>c</sub> are discussed.
299.5Кб