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Improvement of flux pinning in the Ag-clad Bi-Pb-Sr-Ca-Cu-O wires through the use of a short period melt processing

Journal Article


Abstract


  • A significant enhancement of the Jc in magnetic field in the Ag-clad Bi-Pb-Sr-Ca-Cu-O (BPSCCO) wires has been achieved by using a short period melt processing. The weak links have been largely eliminated in the melt-processed tapes which exhibits a 3-10-fold increase in the Jc at 77 K and 1 T over the normally processed tapes. For tapes with a thickness 80 μm 60% of melt-processed samples have the Jc values between 10 000 and 27 000 A/cm2 at 77 K in zero field. The irreversibility lines determined using ac susceptibility measurements under dc fields confirmed the improvement of flux pinning in the melt-processed tapes compared with the normally processed tapes. The improved Jc-H characteristics may be attributed to the desirable microstructures produced from the high Tc phase formation-decomposition-recovery process through the use of a short period melting.

Publication Date


  • 1992

Citation


  • Dou, S. X., Liu, H. K., & Guo, Y. C. (1992). Improvement of flux pinning in the Ag-clad Bi-Pb-Sr-Ca-Cu-O wires through the use of a short period melt processing. Applied Physics Letters, 60(23), 2929-2931. doi:10.1063/1.106823

Scopus Eid


  • 2-s2.0-0010005675

Start Page


  • 2929

End Page


  • 2931

Volume


  • 60

Issue


  • 23

Abstract


  • A significant enhancement of the Jc in magnetic field in the Ag-clad Bi-Pb-Sr-Ca-Cu-O (BPSCCO) wires has been achieved by using a short period melt processing. The weak links have been largely eliminated in the melt-processed tapes which exhibits a 3-10-fold increase in the Jc at 77 K and 1 T over the normally processed tapes. For tapes with a thickness 80 μm 60% of melt-processed samples have the Jc values between 10 000 and 27 000 A/cm2 at 77 K in zero field. The irreversibility lines determined using ac susceptibility measurements under dc fields confirmed the improvement of flux pinning in the melt-processed tapes compared with the normally processed tapes. The improved Jc-H characteristics may be attributed to the desirable microstructures produced from the high Tc phase formation-decomposition-recovery process through the use of a short period melting.

Publication Date


  • 1992

Citation


  • Dou, S. X., Liu, H. K., & Guo, Y. C. (1992). Improvement of flux pinning in the Ag-clad Bi-Pb-Sr-Ca-Cu-O wires through the use of a short period melt processing. Applied Physics Letters, 60(23), 2929-2931. doi:10.1063/1.106823

Scopus Eid


  • 2-s2.0-0010005675

Start Page


  • 2929

End Page


  • 2931

Volume


  • 60

Issue


  • 23