| 原子半径差与高温超导电性的关系 |
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| 引用本文： | 康永刚,胡顺田,张秀娥. 原子半径差与高温超导电性的关系[J]. 低温与超导, 2009, 37(3) |
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| 作者姓名： | 康永刚 胡顺田 张秀娥 |
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| 作者单位： | 1. 防灾科技学院,三河,065201
2. 西北师范大学物理与电子工程学院,兰州,730070 |
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| 摘 要： | 提出了确定各种类型的稀土氧化物的原子半径差Δd的计算公式,用该式计算了60种稀土氧化物超导体的原子半径差Δd的值,发现稀土氧化物超导体的原子半径差Δd多数集中在0.5878—0.6158之间一个狭窄范围。而原子半径差在此范围之外的稀土氧化物一般不具有超导性,常见非氧化物超导体的原子半径差一般不在此范围。显然原子半径差Δd可作为稀土氧化物超导性的一个经验判据,这对进一步探讨稀土氧化物的超导机制有一定指导意义。
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| 关 键 词： | 原子半径差 氧化物超导体 高温超导电性 |
Relationship between high temperature superconductivity and atomic radiuses difference |
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| Kang Yonggang,Hu Shuntian,Zhang Xiu'e. Relationship between high temperature superconductivity and atomic radiuses difference[J]. Cryogenics and Superconductivity, 2009, 37(3) |
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| Authors: | Kang Yonggang Hu Shuntian Zhang Xiu'e |
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| Affiliation: | 1.Institute of Disaster-Prevention Science and Technology;Sanhe 065201;China;2.College of Physics and Electronic Engineering of Northwest Normal University;Lanzhou 730070;China |
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| Abstract: | A formula used to calculate the atomic radiuses difference Δd of various types of rare earth oxide was proposed.The Δd values of 60 rare earth oxide superconductors were calculated with this formula.It is found that the atomic radiuses difference Δd values of rare earth oxide superconductors concentrate in a narrow range from 0.5878 to 0.6158 and that the rare earth oxide with values outside this region would be non-superconductive.It is clear that this result is of benefit to inquire the mechanism of superconductivity. |
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| Keywords: | Atomic radiuses difference Oxide superconductors High temperature superconductivity. |
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