以乙酰丙酮铁(Fe(acac)3)和氯铂酸(H2PtCl6.6H2O)分别作Fe源和Pt源,三缩四乙二醇(TEG)作溶剂和还原剂,聚乙烯基吡咯烷酮( PVP)作表面活性剂,通过多元醇还原法制备出单分散的FePt纳米颗粒.通过X射线衍射仪(XRD)及透射电子显微镜(TEM)分析表明,所制备的FePt纳米颗粒形状近似球形,分散性较好,平均颗粒粒径约为5.5nm.通过振动样品磁强计(VSM)分析显示所制备FePt纳米颗粒矫顽力为37.64kA/m,这意味着FePt 纳米颗粒部分转变为面心四方相(L10相).%FePt nanoparticles were prepared by polyol-reduction method, where Fe(acac)3, H2PtCls · 6H2O, tetraethylene glyco(TEG) and poly(N-vinyl-2-pyrrolidone)(PVP) were used as Fe sources, Pt sources, reductant and protective polymer, respectively. The as-prepared FePt nanopartieles were characterized by X-ray powder diffraction (XRD), transmission electron microscopy(TEM) and vibrating sample magnetometer(VSM). The results of XRD and TEM exhibit that the FePt nanopartieles were spherical shapes with high mono-dispersibility, the average size of the FePt nanopartieles was about 5. 5nm. The result of VSM show that the coercivity of FePt nanopartieles was 37. 64 kA/m, which implying the FePt nanopartieles partly transformed from fcc structure into ordered L10 structure.
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