A Synthetic Route to Size-Controlled fcc and fct FePt Nanoparticles

摘要

Self-assembled L1_0 FePt nanoparticle superlattices have recently been identified as promising candidates for magnetic storage applications because of their large uniaxial magnetocrystalline anisotropy [K_u approx= 7 x 10~6 J/m~3] and good chemical stability.Calculations indicate that particles as small as 2.8 nm have a sufficiently high KV product to be exploited for permanent data storage,leading to significant advances in hard disk drive areal densities over currently used materials.