利用Mossbauer谱,磁测量技术对稀土合金SmFe_(10-x)Co_xTi系列的晶位及性质进行研究,实验分析表明,Fe被少量Co替代后,Co原子优先进入8f晶位;Co取代Fe明显提高化合物的Curie温度,饱和磁化强度与Fe的超精细物随Co的增多有类似的变化曲线,均在Co含量x=2处达到极大值。这主要由于掺入的Co影响了合金原子的交换作用,导致合金Curie温度上升。
Mossbauer spectroscopy and magnetic measurement were used to inve-stigate the site and properties of SmFe_(10-x)Co_xTi alloys. When Fe was substitutedby Co in a small amount, Co preferred 8f site; the substitution of Co for Fe re-sulted in a great increase in Curie temperature T_c of the compounds The satura-tion magnetization and the hyperfine field of Fe presented similar curves withincreasing Co content χ, each reached maximum at χ=2. The Co substitutions hadeffects on exchange interaction between alloy atoms, which caused increasing Curietemperature.
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