The synthesis and magnetic properties of Co(Fe)Pt nanoparticles

Magnetic nanoparticles are essential for advanced applications such as high performance permanent magnets, high density magnetic recording media, drug carriers and sensors in biomedical technology. Among various magnetic nanomaterials, the chemically ordered L10-phase Co(Fe)Pt NPs received considerable attention for its large uniaxial magnetocrystalline anisotropy. Controlled preparation of chemical disordered face-centered cubic (fcc) Co(Fe)Pt NPs with specific sizes and shape has been investigated by high temperature solution-phase synthesis in previous research. While, heat treatments above 500 °C are necessary to transfer it into face-centered-tetragonal (fct or L10) phase. [1-2]