| 钡钇铜氧化物陶瓷超导电性的研究 |
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| 引用本文： | 高温超导材料科研组. 钡钇铜氧化物陶瓷超导电性的研究[J]. 中山大学学报(自然科学版), 1987, 0(3) |
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| 作者姓名： | 高温超导材料科研组 |
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| 作者单位： | 中山大学物理学系，中山大学化学系，中山大学测试中心 |
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| 摘 要： | 赵忠贤等报导了对Ba_(0.5)Y_(4.5)Cu_5O_(5(3-y)陶瓷超导电性的早期研究结果,经1000℃烧结6小时后炉冷试样的零电阻超导温度为78.5K,转变宽度为4K.测量电阻-温度曲线所用的电流密度为0.04A/cm~2,未给出临界电流密度Jc的值. 本文所用试样的成份为Ba_2Y_2Cu_3O_(3(3-y′).混合均匀的金属氧化物粉末由草酸盐分解法制得.氧化物粉末经压制成型后于空气中加热至920℃至1050℃烧结6小时炉冷.X-衍射分析结果表明,试样基本上为单相的准正交相,其晶格常数为a=3.840A.b=3.906A,c=11.718A.断口扫描测试表明,该试样的平均晶粒尺寸小于5μ,晶粒大小均匀.断口相呈部份穿晶断裂,有不太明显的断裂台阶,韧性及强度均较好.能谱
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| 关 键 词： | 超导电性 氧化物陶瓷 零电阻超导温度 |
A Study of Superconductivity in the Ba-Y-Cu-O System Ceramic |
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| Zhang Jinxin Lin Guangming Luo Yuji Huang Kunyao Du Zhonglian Huang Qingzhu et al.. A Study of Superconductivity in the Ba-Y-Cu-O System Ceramic[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 1987, 0(3) |
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| Authors: | Zhang Jinxin Lin Guangming Luo Yuji Huang Kunyao Du Zhonglian Huang Qingzhu et al. |
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| Affiliation: | Zhang Jinxin Lin Guangming Luo Yuji Huang Kunyao Du Zhonglian Huang Qingzhu et al. |
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| Abstract: | The Component of superconductor body is Ba_2 Cu_3 and the phase structure of this oxidate ceramic is mainly quasi-orthorhombic phase with lanice constants a=3.840A, b=3.906A and c=11.718A respestively. The obtined temperature corresponding to zero resistivity is 91.OK and the temperature rance in which the superconductivity transition completed is 1.2K. |
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| Keywords: | supcrconductivity superconductive ceramic resistivity free. |
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