摘要
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 substituted
by 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 with
increasing Co content χ, each reached maximum at χ=2. The Co substitutions had
effects on exchange interaction between alloy atoms, which caused increasing Curie
temperature.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第1期B071-B073,共3页
Acta Metallurgica Sinica
关键词
稀土合金
晶位
穆斯堡尔谱
Mossbauer effect
crystallographic site
hyperfine field
exchange interaction
