摘要
本文通过对面心铁镍固溶体的价电子结构分析及对不同温度下的铁镍固溶体a～x曲线、不同成分下的a～T曲线的计算,并根据固溶体的平均原子模型。对γ-Fe-Ni固溶体的磁效应进行了修正,给出了γ-Fe-Ni置换式固溶体的平均原子单键半径的经验关系式R^s(1)=(1-x)R^A(1)=xR^B(1)+k(T)(1-T/T)(?)(x)。在一级近似下,计算结果与实验值符合得很好。
On the basis of analysing the valence electronic structures of γ-Fe-Ni solid solution and calculating the α～x and α～T curves of γ-Fe-Ni alloy, the magnetic effect term is amended when Yu’s average atomic model is applied to γ-Fe-Ni alloy. The calculated results are in good agreement with the experimental values. This makes it possible to study Invar alloys further. The study shows that the single-bond radius of average atom of γ-Fe-Ni solid solution can be calculated by the semi-empirical formula:R^s(1)= (1-x)R^(Fe)(1)+ xR^(Ni)(1) + /k(T)(1 -T/T_0)μ.
出处
《吉林大学自然科学学报》
CSCD
1990年第2期39-42,共4页
Acta Scientiarum Naturalium Universitatis Jilinensis
关键词
固溶体
价电子
自发磁化
晶格常数
solid solution, magnetic exchange interaction, valence structure, lattice parameter
