| Y-Ba-Cu-O系超导体的水解性研究 |
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| 引用本文： | 庄得新,肖鸣山,张子清,李祥晨,岳书彬,赵焕绥,尚淑霞,李翠平.Y-Ba-Cu-O系超导体的水解性研究[J].山东大学学报(理学版),1987(3). |
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| 作者姓名： | 庄得新 肖鸣山 张子清 李祥晨 岳书彬 赵焕绥 尚淑霞 李翠平 |
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| 作者单位： | 山东大学物理系，山东大学物理系，山东大学物理系，山东大学物理系，山东大学实验中心，山东大学实验中心，山东大学实验中心，山东大学实验中心 |
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| 摘 要： | 高转变温度T_c的Y—Ba—Cu—O系超导体是目前最引人注目的超导材料。这种超导体在液氮沸点温度以上有稳定的零电阻温度T_o。对于不同的Y、Ba和Cu组分比,只要采用相应的烧结条件,均能制备出T_c>90K的超导样品。我们在实验中发现,此种体系超导体无论组分如何,均有明显的水解特性,最终失去超导电性。水解的最终生成物由X射线衍射测定决定。另外,利用计算机对超导体完全水解的温度-时间关系进行了模拟计算。我们以组分比Y:Ba:Cu=1:2:3均匀混料,在850℃下预烧4小时(h),然后磨碎并过筛,压制成直径16mm、厚度1.5mm的圆片,在960℃下通氧烧结9小时,得到
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STUTY OF HYDROLYTIC PROPERTY OF Y-Ba-Cu-O SYSTEM SUPERCONDUCTORS |
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| Zhuang Dexin,Xiao Mingshan,Zhang Ziqing,Li Xiangchen Yue Shubin,Zhao Huansui,Shang Shuxia & Li Cuiping.STUTY OF HYDROLYTIC PROPERTY OF Y-Ba-Cu-O SYSTEM SUPERCONDUCTORS[J].Journal of Shandong University,1987(3). |
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| Authors: | Zhuang Dexin Xiao Mingshan Zhang Ziqing Li Xiangchen Yue Shubin Zhao Huansui Shang Shuxia & Li Cuiping |
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| Abstract: | This paper studies the hydrolytic behaviors of Y-Ba-Cu-O system superconductors. It is shown by scanning electric microscope and X-ray diffraction analysis that these superconductors are two phase compounds (the single orthorhombic phase and the body-centred tetragonal phase) before hydrolyzed. But, after hydrolyzed, they become BaCO_3,CuO and Y(OH)_3 etc. Using computer to simulate the hydrolytic data, we obtain the relation between time (t) and temperature (T) at which the system superconductors become completely hydrolyzed. It can be expressed approximately by t=(1/b)(1n(a/T)~5. |
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| Keywords: | hydrolytic behaviors single orthorhombic phase body-centred tetragonal phase |
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