| Bi-Pb-Sr-Ca-Cu-O系反应过程研究 |
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| 引用本文： | 奚正平,周廉,冀春霖.Bi-Pb-Sr-Ca-Cu-O系反应过程研究[J].物理学报,1991,40(1):122-126. |
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| 作者姓名： | 奚正平 周廉 冀春霖 |
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| 作者单位： | (1)东北工学院,沈阳,110006; (2)西北有色金属研究院,宝鸡,721014 |
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| 基金项目： | 国家超导技术联合研究开发中心的资助 |
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| 摘 要： | 采用高温X射线和DTA技术研究了三步反应法合成Bi-Pb-Sr-Ca-Cu-O超导体的反应过程。实验结果表明样品在740℃能形成2212相,在825℃形成2223相.2212相在875℃左右异分熔化成2201相和液相,2223相在935℃左右同分熔化。2212相在晶化过程中容易形成强的c轴取向。
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| 关 键 词： | 超导体 三步反应法 X射线 DTA |
| 收稿时间： | 4/4/1990 12:00:00 AM |
REACTION PROCESS IN THE Bi-Pb-Sr-Ca-Cu-O SYSTEM |
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| XI ZHENG-PING,ZHOU LIAN and JI CHUN-LIN.REACTION PROCESS IN THE Bi-Pb-Sr-Ca-Cu-O SYSTEM[J].Acta Physica Sinica,1991,40(1):122-126. |
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| Authors: | XI ZHENG-PING ZHOU LIAN and JI CHUN-LIN |
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| Abstract: | The reaction process of formation of the Bi-Pb-Sr-Ca-Cu-O superconductor by means of a three-step reaction method was studied by high-temperature X-ray diffraction meansurement and DTA technique. The 2212 phase began to form at about 740℃ from the mixture of the Bi-Pb-Sr-Ca-O precursor-CuO, and the 2223 phase at about 825℃. The 2212 phase melted incongruently to the 2201 phase and a liquid phase at about 875℃ and the 2223 phase melted a liquid phase at about 935℃. In the crystallization of the 2212 phase, strong c-orientation forms easily. |
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