A Novel Approach to Synthesis of FePt Magnetic Nanoparticles


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Chemical reduction of ferric acetylacetonate (Fe(acac)3) and platinum acetylacetonate (Pt(acac)2) using polyol as a reducing agent as well as an effective surfactant, has successfully yielded monodisperse FePt nanoparticles with a size of approximately 2 nm. When annealed samples were compared to FePt nanoparticles synthesized using oleic acid and oleylamine as the surfactants under identical conditions, nearly 30% increase in coercivity (Hc) was achieved with the new, simple and economic method.



Edited by:

N. Ali




K. E. Elkins et al., "A Novel Approach to Synthesis of FePt Magnetic Nanoparticles", Journal of Nano Research, Vol. 1, pp. 23-30, 2008

Online since:

January 2008


[1] H. Zeng, J. Li, Z. L. Wang, J.P. Liu, S. Sun, Exchange-coupled nanocomposite magnets by nanoparticle self-assembly, Nature 420 (2002) 395-398.

DOI: https://doi.org/10.1038/nature01208

[2] S. Sun, C.B. Murray, D. Weller, L. Folks, A. Moser, Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices, Science 287 (2000) 1989-(1992).

DOI: https://doi.org/10.1126/science.287.5460.1989

[3] (a) W.S. Seo, J.H. Lee, X. Sun, Y. Suzuki, D. Mann, Z. Liu, M. Terashima, P.C. Yang, M.V. McConnell, D.G. Nishimura, H. Dai, FeCo/graphitic-shell nanocrystals as advanced magneticresonance-imaging and near-infrared agents, Nat. Mater. 5 (2006).

DOI: https://doi.org/10.1038/nmat1775

[4] S.H. Chung, A. Hoffmann, S.D. Bader, C. Liu, B. Kay, L. Makowski, L. Chen, Biological sensors based on Brownian relaxation of magnetic nanoparticles, Appl. Phys. Lett. 85 (2004) 2971-2973.

DOI: https://doi.org/10.1063/1.1801687

[5] (a) F. Fievet, J. P. Lagier, B. Blin, B. Beaudon, M. Figlarz, Homogeneous and heterogeneous nucleations in the polyol process for the preparation of micron and submicron size metal particles, Solid State Ionics 32/33 (1989).

DOI: https://doi.org/10.1016/0167-2738(89)90222-1

[6] S. Lee, Y. Jun, S. Cho, J. Cheon, Single-crystalline star-shaped nanocrystals and their evolution: Programming the geometry of nano-building blocks, J. Am. Chem. Soc. 124 (2002) 11244-11245.

DOI: https://doi.org/10.1021/ja026805j

[7] S. Sun, Recent advances in chemical synthesis, self-assembly, and applications of FePt nanoparticles, Adv. Mater. 18 (2006) 393-403.

DOI: https://doi.org/10.1002/adma.200501464

[8] M. Chen, J.P. Liu, S. Sun, One-step synthesis of FePt nanoparticles with tunable size, J. Am. Chem. Soc. 126 (2004) 8394-8395.

DOI: https://doi.org/10.1021/ja047648m

[9] S. Sun, S. Anders, T. Thomson, J.E.E. Baglin, M.F. Toney, H.F. Hamann, C.B. Murray, B.D. Terris, Controlled synthesis and assembly of FePt nanoparticles, J. Phys. Chem. B 107 (2003) 5419-5425.

DOI: https://doi.org/10.1021/jp027314o

[10] M. Chen, J. Kim, J.P. Liu, H. Fan, S. Sun, Synthesis of FePt nanocubes and their oriented Self-assembly, J. Am. Chem. Soc 28 (2006) 7132-7133.

[11] T. Iwaki, Y. Kakihara, T. Toda, M. Abdullah, K. Okuyama, Preparation of high coercivity magnetic FePt nanoparticles by liquid process, J. Appl. Phys. 94 (2003) 6807-6811.

DOI: https://doi.org/10.1063/1.1619577

[12] S. Sun, E.E. Fullerton, D. Weller, C.B. Murray, IEEE Trans. Magn. 37 (2001) 1239-1243.

[13] A.K. Sra, T.D. Ewers, Q. Xu, H. Zandbergen, R.E. Schaak, One-pot synthesis of bi-disperse FePt nanoparticles and size-selective self-assembly into AB2, AB5, and AB13 superlattices, Chem. Commun. (2006) 750-752.

DOI: https://doi.org/10.1039/b515673d

[14] Y. Sasaki, M. Mizuno, A.C.C. Yu, T. Miyauchi, D. Hasegawa, M. Takahashi, B. Jeyadevan, K. Tohji, K. Sato, S. Hisano, Chemically synthesized L1o-type FePt nanoparticles and nanoparticle arrays via template-assisted self-assembly, IEEE Trans. Magn. 41 (2005).

DOI: https://doi.org/10.1109/tmag.2004.838040

[15] H. M Song, J.H. Hong, Y. B Lee, W.S. Kim, Y. Kim, S.J. Kim, N.H. Hur, Growth of FePt nanocrystals by a single bimetallic precursor [(CO)3Fe(mu-dppm)(Mu-CO)PtCl2], Chem. Commun. (2006) 1292-1294.

DOI: https://doi.org/10.1039/b516831g

[16] C. Liu, X. Wu, T. Klemmer, N. Shukla, X. Yang, D. Weller, A.G. Roy, M. Tanase, D. Laughlin, Polyol process synthesis of monodispersed FePt nanoparticles, J. Phys. Chem. B 108 (2004) 6121-6123.

DOI: https://doi.org/10.1021/jp0312971

[17] (a) S. Momose, H. Kodama, T. Uzumaki, A. Tanaka, Fine tuning of the sizes of FePt nanoparticles Jap. J. Appl. Phys. 44 (2005).

DOI: https://doi.org/10.1143/jjap.44.1147

[18] K.E. Elkins, T.S. Vedantum, J.P. Liu, , H. Zeng, S. Sun, Y. Ding, Z.L. Wang, Ultrafine FePt nanoparticles prepared by the chemical reduction method, Nano Lett. 3 (2003) 1647-1649.

DOI: https://doi.org/10.1021/nl034734w

[19] V. Nandwana, K.E. Elkins, J.P. Liu, Magnetic hardening in ultrafine FePt nanoparticle assembled films, Nanotechnology 16 (2005) 2823-2826.

DOI: https://doi.org/10.1088/0957-4484/16/12/015

[20] V. Nandwana, K.E. Elkins, N. Poudyal, G.S. Chaubey, K. Yano, J.P. Liu, Size and shape control of monodispersed FePt nanoparticles, J. Phys. Chem. C 111 (2007) 4185-4189.

DOI: https://doi.org/10.1021/jp068330e