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Improvement of the critical current density in the silver sheathed Bi‐Pb‐Sr‐Ca‐Cu‐O superconducting tape

 

作者: M. Mimura,   H. Kumakura,   K. Togano,   H. Maeda,  

 

期刊: Applied Physics Letters  (AIP Available online 1989)
卷期: Volume 54, issue 16  

页码: 1582-1584

 

ISSN:0003-6951

 

年代: 1989

 

DOI:10.1063/1.101319

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The critical current density (Jc) at 77 K and in 0 T of more than 3000 A/cm2has been obtained in the silver sheathed Bi‐Pb‐Sr‐Ca‐Cu‐O tape fabricated by the combination process of sintering and intermediate cold working. The decrease of theJcwith increasing magnetic field is much smaller in the tape prepared by this process than that prepared by sintering only. The improvement of theJcis attributed to the improvement of the coupling between the grains of the highTcphase. The process enhances the formation of the highTcphase and produces a highly oriented grain structure. These are considered to be responsible for the large improvement of the coupling.

 

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