| 掺杂MgB_2体系超导电性的一个判据 |
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| 引用本文： | 张秀娥,孙爱民,康永刚,杨国锋,王顺清,张涛,黄国海,珠海滨. 掺杂MgB_2体系超导电性的一个判据[J]. 低温与超导, 2008, 36(1): 29-32 |
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| 作者姓名： | 张秀娥 孙爱民 康永刚 杨国锋 王顺清 张涛 黄国海 珠海滨 |
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| 作者单位： | 1. 西北师范大学物理与电子工程学院,兰州,730070
2. 防灾科技学院,河北三河,065201 |
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| 摘 要： | 提出一个计算原子半径差和电负性差的方法,研究了原子半径差Δd和电负性差Δe及它们之比△d/△e与掺杂MgB2体系超导转变温度Tc的关系,发现三者都与转变温度有良好的规律性,对它们进行数值模拟都获得开口向下的抛物线关系。由此,提出用原子半径差、电负性差、及它们之比△d/△e作为提高掺杂二硼化镁超导电性的一个新依据。
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| 关 键 词： | 原子半径差 电负性差 掺杂二硼化镁 超导电性 |
| 修稿时间： | 2007-09-24 |
A new criterion of superconductivity of the doping MgB2 |
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| Zhang Xiu'e,Sun Aimin,Kang Yonggang,Yang Guofeng,Wang Shunqing,Zhang Tao,Huang Guohai,Zhu Haibin. A new criterion of superconductivity of the doping MgB2[J]. Cryogenics and Superconductivity, 2008, 36(1): 29-32 |
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| Authors: | Zhang Xiu'e Sun Aimin Kang Yonggang Yang Guofeng Wang Shunqing Zhang Tao Huang Guohai Zhu Haibin |
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| Abstract: | This article gives a new method of calculating atomic radiuses difference and electro-negativity difference,the relation of the superconductive critical transition temperature Tc of the doping MgB2 with atomic radiuses difference,electro-negativity difference as well as their ratio was studied.The mathematical model get the same relationships with a shape of downturned parabola.It's suggested that atomic radiuses difference Δd,electro-negativity difference Δe as well as their ratio △d /△e can be used as a new good criterion for the experiment of enhancing superconductivity of doping MgB2. |
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| Keywords: | Atomic radiuses difference Electro-negativity difference Doping MgB2 Superconductivity |
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