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以乙酰丙酮铁(Fe(acac)3)和氯铂酸(H2PtC16·6H2O)作为Fe源和Pt源,硼氢化钠(NaBH4)作为还原剂,PVP作为表面活性剂,通过化学还原法制备出单分散的FePt纳米颗粒,研究PVP对FePt纳米颗粒磁性能的影响.通过X射线衍射(XRD)仪,透射电子显微镜(TEM)和振动样品磁强计(VSM)对纳米颗粒进行表征.结果表明:PVP修饰的FePt纳米颗粒为面心立方(fcc)结构,形状近似球形且分散性良好,矫顽力为零,呈超顺磁性.当PVP与Fe(acac)3的比例为7:1时,经600℃热处理保温30 min,FePt纳米颗粒从无序的fcc结构转变为有序的fct结构,矫顽力最大,可达5460A.m-1.

参考文献

[1] Sun S H;Murry C;Weller D et al.[J].Science,2000,287:1989.
[2] Ely T O;Pan C;Amiens C et al.[J].journal of Physical Chemistry B,2000,4:695.
[3] Liou S H;Huang S;Klimek E et al.[J].Journal of Applied Physics,1999,85:4334.
[4] Carpenter EE.;Wienmann JA.;Zhou WL.;O'Connor CJ.;Sims JA. .Magnetic properties of iron and iron platinum alloys synthesized via microemulsion techniques[J].Journal of Applied Physics,2000(9 Pt.2):5615-5617.
[5] Carpenter E E;Seip C T;O'Connor C J .[J].Journal of Applied Physics,1999,85:5184.
[6] Akimasa Sakuma .[J].JPhys Soc Jpn,1994,63:3053.
[7] Wang HL;Huang Y;Zhang Y;Hadjipanayis GC;Weller D;Simopoulos A .Effects of annealing on the magnetic and structural properties of FePt nanoparticles prepared by chemical synthesis[J].Journal of Magnetism and Magnetic Materials,2007(1):22-27.
[8] Weller D;Moser A .[J].IEEE Transactions on Magnetics,1999,35:4423.
[9] Momose S;Kodama H;Uzumaki T et al.[J].IEEE Magnetics Society,2005,41(02):665.
[10] Rong C;Li D;Nandwana V et al.[J].Advanced Materials,2006,18(22):2984.
[11] Lee U;Choi J;Myung N et al.[J].Bull Korean Chem Soe,2008,29(03):689.
[12] Yang Y J;Xiang B J .[J].Journal of Crystal Growth,2005,284(3-4):453.
[13] Zhang W;Liu Y;Cao R et al.[J].Journal of the American Chemical Society,2008,130(46):15581.
[14] Ghosh G;Naskar M K;Patra A et al.[J].Optical Materials,2006,28(8-9):1047.
[15] Takashi Iwamoto;Kinya Matsumoto;Yoshitaka Kitamoto et al.[J].Journal of Colloid and Interface Science,2007,308(02):564.
[16] Song S H;Park J S;Nahm T U et al.[J].Journal of the Korean Physical Society,2004,45(01):51.
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