Fabrication and Microstructure of BSCCO Superconductive Wires Made by LHPG Method

Abstract

Abstract: Laser heated pedestal growth technique (LHPG) has been used to fabricate BSCCO (BiSrCaCuO) superconductive wires.The critical current density of the wires has surpassed 5000A/cm~2 (78K, OT;cross area=1.04 mm~2).The fiber rods obtained directly from LHPG method are semiconductive and after heat treatment at temperature range from 780 to 870℃,they transformed into superconductive wires.Triple junctions and sharp grain boundary exist in the sample.HREM studies showed the intergrowth of (010) and (110),the occasional missing of CaCuO_2 layer in the 2212 phase.

Key words: BiSrCaCuO superconductive wire, laser heated pedestal growth, microstructure

Cheng ZHANG Xin WANG Ming JIANG Jianguo HUANG Yongzhong WANG Guiwen QIAO Institute of Metal Research,Academia Sinica,Shenyang,110015,China. Fabrication and Microstructure of BSCCO Superconductive Wires Made by LHPG Method[J]. J Mater Sci Technol, 1993, 9(5): 376-378.

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Fabrication and Microstructure of BSCCO Superconductive Wires Made by LHPG Method

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