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HOME > J Korean Powder Metall Inst > Volume 11(3); 2004 > Article
화학적인 환원 공정에 의한 FePt 나노입자의 합성
Synthesis of FePt Nanoparticles by Chemical Reduction Process
Journal of Korean Powder Metallurgy Institute 2004;11(3):242-246
DOI: https://doi.org/10.4150/KPMI.2004.11.3.242
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FePt nanoparticles for high-density magnetic recording media were synthesized by the simultaneous chemical reduction of Fe(acac) _2 and Pt(acac) _2 with 1,2-hexadecanediol as the reducing reagent. TEM images showed that the shape of as-synthesized FePt nanoparticle was spherical and average particle size was 3 nm. Also, SAD pattern showed that crystal structure was disordered FCC (face centered cubic). These FCC structured nanoparticles were transformed FCT (face centered tetragonal) structure by annealing at 550°C for 30 min in Ar atmosphere. XRD analysis revealed that as-synthesized FePt nanoparticles were transformed from disordered FCC to ordered FCT. Finally, the coercivity of 2 kOe for FePt nanoparticles with FCT structure was obtained by VSM measurement.

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