| 123相化合物在变价金属离子诱导下的畸变 |
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| 引用本文： | 赵勇,诸葛向彬,李陶宇,许祝安,张其瑞,唐晓明,赵鹏程,何业冶.123相化合物在变价金属离子诱导下的畸变[J].硅酸盐学报,1991(2). |
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| 作者姓名： | 赵勇 诸葛向彬 李陶宇 许祝安 张其瑞 唐晓明 赵鹏程 何业冶 |
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| 作者单位： | 浙江大学物理系
(赵勇，诸葛向彬，李陶宇，许祝安，张其瑞)，浙江大学分析测试中心
(唐晓明)，浙江大学化工系
(赵鹏程)，中国科学院低温技术实验中心(何业冶) |
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| 摘 要： | 研究了用变价金属离子Bi、Al、Ce对123相化合物YBa_3Cu_3O_7中Cu—O链上的Cu元素做全部替代时,其电子性质、晶体结构以及超导电性的变化特征。结果表明,123相化合物有多种结构畸变方式:可形成类似T1系的1212相,也可形成a:b:c=1:2:2~(1/2)的新正交结构。此外,还讨论了123相化合物中形成电子型超导体的可能。
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| 关 键 词： | 结构畸变 元素取代 超导电性 |
DISTORTION OF 123 COMPOUND INDUCED BY METALLIC IONS WITH MULTI-VALENCE |
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| Zhao Yong Zhuge Xiangbin Li Taoyu Xu Zhuan Zhang Qirui Tang Xiaoming Zhao Pengcheng.DISTORTION OF 123 COMPOUND INDUCED BY METALLIC IONS WITH MULTI-VALENCE[J].Journal of The Chinese Ceramic Society,1991(2). |
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| Authors: | Zhao Yong Zhuge Xiangbin Li Taoyu Xu Zhuan Zhang Qirui Tang Xiaoming Zhao Pengcheng |
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| Abstract: | Electronic properties, crystal structure and superconductivity of YBa_2Cu_3O_7, induced by substitution of variable valence ions Bi, Al and Ce for Cu(1), are studied. The experimental results reveal that there are several ways, including some new phase structures, in the distortion of 123 compound. The n-type oxide superconductivity of these systems is discussed. |
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| Keywords: | structural distortion element substitution superconductivity |
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