Microstructure, Magnetic Properties, and Applications of Co-Rich HITPERM-Type Amorphous Alloys

摘要

Examination of microstructure and magnetic properties of amorphous (Fe$_{1}$ Co$_{rm x}$)$_{79}$ Mo$_{8}$ Cu$_{1}$ B$_{12}$ alloys (${rm x} = 1, 2$ and $3$) are performed by combination of analytical techniques. Chemical composition of the investigated samples was tested by laser induced breakdown spectroscopy (LIBS). Mössbauer spectroscopy and X-ray diffractometry investigation have proved full amorphicity of the as-quenched alloys. Good soft magnetic properties as well as low core losses were found for the sample containing 39.5 at.% Co $({rm x} = 1)$. Moreover, results obtained from simulation of choke cores made from (Fe $_{1}$Co $_{1}$) $_{79}$Mo $_{8}$Cu $_{1}$B $_{12}$ and FINEMET-type alloys are compared.