Effects of Sr/Ca ratio and CuO content of the superconducting phases in the Bi-Pb-Sr-Ca-Cu-O system |
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| Authors: | Xi Zhengping Zhou Lian Ji Chunlin Wu Xiaozu |
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| Affiliation: | (1) Northwest Institute for Nonferrous Metal Research, P.O. Box 71, 721014 Baoji, Shaanxi, People's Republic of China;(2) Northeast University of Technology, P.O. Box 119, 110006 Shenyang, Liaoning, People's Republic of China |
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| Abstract: | The Bi-Pb-Sr-Ca-Cu-O superconductor was prepared by the three-step reaction process; the effects of Sr/Ca ratio and CuO content on the formation of the superconducting phases were studied. The Sr-short and Cu-rich nominal compositions are not advantageous for the formation of the 2223 phase but we are favored for the formation of the 2201 phase. The differences among the previous reports on the effect of composition on the formation of the superconducting phase is discussed. The best Jc value of the Ag-sheathed tape filled with the kind of powder is 13,000 A/cm2 (77 K, OT). |
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| Keywords: | Bi-Pb-Sr-Ca-Cu-O superconductor composition |
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