Synthesis of Fe-Pd and Fe-Pd/Ta magnetic nanocomposites by severe plastic deformation

Severe plastic deformation (SPD) and cyclic codeformation were used to prepare bulk magnetic nanocomposite of ordered L1(0) Fe-Pd phase and soft alpha-Fe following an atomic ordering and precipitation reaction. Enhanced coercivity and remanence have been achieved with this method. Layering of Ta foils with the Fe-34 at. %Pd foils was explored in an effort to minimize nanocomposite grain size by confinement. Faster kinetics and improvement in the remanence resulted from Ta layering. (c) 2005 American Institute of Physics.