Abstract
The larger size of FePt nanoparticles is a big challenge in recent years. In my work, controlling size distribution and composition of FePt nanoparticles by thermodecomposition method is the main topic. As-synthesized FePt nanoparticles are chemically disordered and post-annealing is required to obtain chemically ordered FePt. Salt matrix-aid effect in annealing steps of as-synthesized FePt nanoparticles and the magnetic properties of annealed FePt alloy are studied. The exchange coupling phenomenon between FePt (FM) and FePt3 (AFM) nanoparticles was demonstrated and discussed in the final section.