EFFECTS OF LOW-TEMPERATURE TREATMENT ON MAGNETIC PROPERTIES OF Sm(Co, Cu, Fe)5 COMPOUNDS

Abstract

The results on the micro- and nanostructures and on the magnetic domain structure of Sm(Co0,45, Cu0,40, Fe0,15)5 compound are presented. It was shown that the sequential high- and low-temperature heat treatments lead to formation of a homogeneous microstructure with some nanoscale compositional heterogeneities. Such a structure provides the coercive field HcI of up to 32 kOe. The coercivity and remanent magnetization of the samples in the temperature range from 300 to 700 K linearly decrease. It is shown that the nanostructure of the alloy with the highest HcI corresponds to the fractal dimension Df-n ~ 2,3 .

Keywords

• sm(co; cu; fe)5
• coercivity
• nanostructure
• domain structure
• fractal dimension