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| Approaches to improving critical current density of YBCO superconducting thick films deposited by electrophoresis | |
| 基金项目： | 国家自然科学基金，北京交通大学校科研和教改项目 |
| 摘 要： | The irreversibility field (Hirr) of Y-based superconductor is much higher than that of Bi-based superconductor. Y-based superconductor is capable of maintaining stable electrical currents in high magnetic field and electric field, so it is a better suited mate-rial for electric-current applications. Commonly, the Y-based tapes comprise a YBCO thick film deposited on a flexible substrate, typically with an intermediate buffer layer, and an overcoat of noble metal. In this process, the interm… |
Approaches to improving critical current density of YBCO superconducting thick films deposited by electrophoresis |
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| ZHU Yabin,ZHOU Yueliang,LIU Zhen,WANG Shufang,CHEN Zhenghao,U Huibin,YANG Guozhen,XlAO Ling,Ren Hongtao,JIAO Yulei,Zheng Minghui. Approaches to improving critical current density of YBCO superconducting thick films deposited by electrophoresis[J]. Science in China(Physics Astronomy), 2004, 47(2): 165-172. DOI: 10.1360/03yw0211 | |
| Authors: | ZHU Yabin ZHOU Yueliang LIU Zhen WANG Shufang CHEN Zhenghao U Huibin YANG Guozhen XlAO Ling Ren Hongtao JIAO Yulei Zheng Minghui |
| Affiliation: | 1. Department of Physics, College of Science, Beijing Jiaotong University, Beijing 100044, China;Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China 2. Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China 3. General Research Institute for Nonferrous Metals, Beijing 100088, China |
| Abstract: | Fabrication of YBCO superconducting thick films by electrophoresis has been widely reported. However, the value of critical current density (Jc) is far from what the practical application requires. The superconducting thick films are obtained using top-seeded melt growth method with different proportional Y2BaCuO5 (Y211) addition. High-pressure oxygen has been used in the annealing process to improve the uniformity of the oxygen content in the superconducting thick films. When 40mol% Y211 powder is added to the YBa2Cu3O7-d (Y123) powder, Jc for the superconducting thick film by approaches described above reaches 7.008?03 A/cm2 (77 K, 0 T), which is greater than the value ever reported. |
| Keywords: | YBCO thick films electrophoretic deposition melt-textured. |
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