| Bi(Pb)-Sr-Ca-Cu-O体系中110K超导相的制备和结构研究 |
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| 引用本文： | 卢伟京,张玉芬,郑香苗,韦承谦,韦兆清,何俊. Bi(Pb)-Sr-Ca-Cu-O体系中110K超导相的制备和结构研究[J]. 物理化学学报, 1989, 5(2): 129-134. DOI: 10.3866/PKU.WHXB19890201 |
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| 作者姓名： | 卢伟京 张玉芬 郑香苗 韦承谦 韦兆清 何俊 |
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| 作者单位： | Laboratory for Applied Physical Chemistry; Institute of Physical Chemistry; Peking University; Chemical Department; Gnang Xi University |
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| 摘 要： |
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| 关 键 词： | 超志体 制备 结构 氧化物 |
| 收稿时间： | 1988-11-17 |
| 修稿时间： | 1989-04-15 |
PREPARATION AND STRUCTURAL STUDY OF 110 K SUPERCONDUCTING PHASE IN Bi (Pb)-Sr-Ca-Cu-O SYSTEM |
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| Lu Weijing,Zhang Yufen,Zheng Xiangmiao,Wei Chengqian,Wei Zhaoqing,He Jun. PREPARATION AND STRUCTURAL STUDY OF 110 K SUPERCONDUCTING PHASE IN Bi (Pb)-Sr-Ca-Cu-O SYSTEM[J]. Acta Physico-Chimica Sinica, 1989, 5(2): 129-134. DOI: 10.3866/PKU.WHXB19890201 |
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| Authors: | Lu Weijing Zhang Yufen Zheng Xiangmiao Wei Chengqian Wei Zhaoqing He Jun |
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| Affiliation: | Laboratory for Applied Physical Chemistry; Institute of Physical Chemistry; Peking University; Chemical Department; Gnang Xi University |
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| Abstract: | The stable superconducting phase with T_c 110 K has been prepared in samples of nominal composition (Bi_(2-x)Pb_x)Sr_2Ca_2Cu_3O_y and (Bi_(2-x)Pb_x)Sr_2Ca_3Cu_5O_y x=0.2, 0.4, 0.6. The crystal strucuure of the superconducting phase (Bi_1.8Pb_0.2)Sr_2Ca_2Cu_3O_y with T_c 106.3 K has been determined in the sample of nominal composition (Bi_1.8Pb_0.2)Sr_2Ca_3Cu_5O_y. It is a nine decker perovskite arrangement by incorporating two extra layers CaCuO_2 in each cell of Bi_2Ca_1Cu_2O_y. The plane of CuO_2 is planar in incorporating layer CaCuO_2. Speace group D~1_(2h)-Pmmm was assigned. Adding Pb is in Bi site, and atomic radius and atomic valence in Bi site was modified, so that it is able to stabilize crystal structure and progress superconducting properties. |
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