| 掺Si对Bi-Pb-Sr-Ca-Cu-O体材料的超导电性和微结构的影响 |
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| 引用本文： | 曾令文,李永静,千正男,吴代鸣.掺Si对Bi-Pb-Sr-Ca-Cu-O体材料的超导电性和微结构的影响[J].吉林大学学报(理学版),1991(1). |
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| 作者姓名： | 曾令文 李永静 千正男 吴代鸣 |
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| 作者单位： | 吉林大学物理系
(曾令文，李永静，千正男)，吉林大学物理系(吴代鸣) |
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| 摘 要： | 自从Maeda等人发现Bi-Sr-Ca-Cu-O材料的超导电性以来,Bi系体材料和薄膜材料的研究已取得了重大的进展。为了实际应用的需要,直接在Si或SiO_2衬底上制备Bi-Sr-Ca-Cu-O膜是很必要的,因此需要知道Si对Bi系材料超导电性的影响。本文报道了掺Si对Bi-Pb-Sr-Ca-Cu-O体材料的超导电性的影响的初步研究结果。
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| 关 键 词： | 超导电性 微结构 Bi-Pb-Sr-Ca-Cu-O体材料 Si掺杂 |
Influence of Si-doping on the Superconducting Properties and Microstructure in Bi-Pb-Sr-Ca-Cu-O Bulk Materials |
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| Zeng Lingwen,Li Yongjing,Qian Zhengnan and Wu Daiming.Influence of Si-doping on the Superconducting Properties and Microstructure in Bi-Pb-Sr-Ca-Cu-O Bulk Materials[J].Journal of Jilin University: Sci Ed,1991(1). |
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| Authors: | Zeng Lingwen Li Yongjing Qian Zhengnan and Wu Daiming |
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| Abstract: | The effect of the Si-doping on the superconducting properties and microstructure of Bi-Pb-Sr-Ca-Cu-O bulk materials has been investigated. It has been found that the superconducting transition temperature showed no considerable change in Si-doped Bi-Pb-Sr-Ca-Cu-O materials, while the critical current density was fCund to be significantly improved. The microstructures of both Si-doped and Sifree Bi-Pb-Sr-Ca-Cu-O materials were characterized by bar-shape grains and indeterminate shape grains, but the bar-shape grains in the Si-doped materials were much more and longer than those in the Si-free materials. The microstructural change can be considered to be one of the possible reasons to lead to the improvment of the critical current density in the Si-doped Bi-Pb-Sr-Ca-Cu-O materials. |
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| Keywords: | superconducting properties microstructure Bi-Pb-Sr-Ca-Cu-O bulk materils Si-doping |
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