L10-FePt Nanoparticles in a Magnetically Isolated State

概要

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A novel technique for fabricating a L10-FePt nanoparticle film in a magnetically isolated state is reported. An organic mixture, which stabilizes colloids, inhibits the nanoparticles from forming agglomerations during annealing at up to 800°C, and the resulting film shows the included FePt nanoparticles to be L10 phase and magnetically isolated. Such a film indicates a steep decline in coercivity with the temperature increase whereas the nanoparticles have a large uniaxial anisotropy energy density because of thermal relaxation that corresponds to the particle size.
Japan Society of Applied Physicsの論文
2003-10-15