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。
This article gives a new method of calculating atomic radiuses difference and electro -negativity difference, the relation of the superconductive critical transition temperature T 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 Ad , electro - negativity difference Ae as well as their ratio △d/△e can be used as a new good criterion for the experiment of enhancing superconductivity of doping MgB2.
出处
《低温与超导》
CAS
CSCD
北大核心
2008年第1期29-32,共4页
Cryogenics and Superconductivity
关键词
原子半径差
电负性差
掺杂二硼化镁
超导电性
Atomic radiuses difference
Electro - negativity difference
Doping MgB2
Superconductivity
