Magnetic phases in the CoMn-based amorphous alloys

The temperature dependence of the magnetization as well as magnetization processes were studied in amorphous (Co52Mn37Fe7Ti4)100−xSix alloys. The presence of two different ferromagnetic phases was observed in the alloys. The low temperature soft-magnetic phase is formed by ordered Co magnetic moments. Transition from low temperature phase to high temperature phase occurs from 135 to 245 K depending of the Si concentration. It is supposed that the second magnetic phase is formed by non-compensated Mn magnetic moments.