Synthesis and Morphology of Face Centered Cubic (FCC) Fe-Pt Nanoparticles

International Journal of Bio-Inorganic Hybrid Nanomaterials

مقاله 5، دوره 2، شماره 3، مهر 2013، صفحه 443-447   

نوع مقاله: Research Paper

چکیده

FePt nanoparticles with thermally stable room-temperature ferromagnetism are investigated. The monodisperse nanoparticles are prepared by chemical synthesis and a salt-matrix annealing technique. Structural and magnetic characterizations confirm the phase transition from the disordered face-centered cubic structure. In this paper, 3 nm FePt nanoparticles are first synthesized by superhydride reduction of Fe and Pt. Transmission Electron Microscopy (TEM) images show that the hard magnetic FePt are agglomerated after annealing at 675°C. Scanning Electron Microscopy (SEM) images indicate that the size of FePt nanoparticles increase by increasing of the annealing temperature.

کلیدواژه‌ها

FePt nanocrystals؛ anisotropy؛ Hard magnetic nanoparticles؛ Chemical synthesis؛ Sintering؛ Recording media