Fe-Ni合金的价电子结构

来源期刊：中南大学学报(自然科学版)1984年第1期

论文作者：谢佑卿 马柳莺 谢昭春

文章页码：1 - 10

关键词：价电子结构； 合金； 晶格参数； 共价电子； 原子磁矩； 电阻率； 效应； 经验电子理论； 价键理论； 高自旋态

摘    要：本文应用“固体与分子的经验电子理论”对面心立方Fe-Ni合金进行了分析,得出了价电子结构随Fe含量变化的演变关系。不仅满意地解释了Fe-Ni合金的平均原子磁矩、晶格参数和电阻率等的变化规律,更重要的是对Invar效应和Elinvar效应的物理本质给出了“价键理论”的新解释。提出了产生这两种效应的三个必要条件。并指出把Invar和Elinvar效应的理论建立在磁学理论基础上是不适当的。

Abstract: The valence electron structure of Fe-Ni alloys has been analyzed in tlie f. c. c. range based on the empirical electron theory of solids and molecules. The regularity of the valence electron structure changing with relative content of Fe at 0--70at. % Fe has been found. The selationship of the mean atomic magnetic moment, lattice parameters and resistivity with the content and temperature can be satisfactorily explained by this regularity. It is more important that a new explanation of the valence bond theory has been given to the physical nature of Invar and Elinvar effects of Fe-Ni alloys. From this explanation, it has been concluded that there must be three necessary conditions to produce ideal Invar and Elin- var effects and that it is improper to build the theory of Invar and Elin- var effects on the basis of magnetism theory.