The magnetic behavior of Cu-Ni-Co-Fe quaternary alloys prepared by Mechanical alloying

The Cu-Ni-Co-Fe alloys with average grain size~10nm have been prepared by mechanical alloying. The ball milled and annealed samples were characterized by XRD, HRTEM and magnetic measurement. In the case of ball milled sample, superior magnetic properties have been achieved for sample comprising dispersed magnetic phases in Cu-rich matrix. In the case of annealed sample magnetic properties are improved due to precipitation of hard magnetic phase Co(fcc) from single phase Cu-rich solid solution.