The Synthesis of Silica-Coated Permalloy Nanoparticles Using a Water-in-Oil Microemulsion

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A water-in-oil microemulsion method was used for the preparation of silica-coated permalloy (Ni0.80Fe0.20) nanoparticles. The particles were prepared by the reduction of their salts with sodium borohydride NaBH4 in a cationic water-in-oil (w/o) microemulsion of water/cetyltrimethyl- amonium bromide (CTAB) and n-butanol/isooctane at 25oC. According to the TEM and x-ray diffraction analyses, the synthesized material was in the form of nanoparticles. The magnetization of the silica-coated nanoparticles was lower than that of the uncoated particles, reflecting the influence of the nonmagnetic silica surface layer on the magnetization.

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Periodical:

Edited by:

Dragan P. Uskokovic, Slobodan K. Milonjic, Djan I. Rakovic

Pages:

161-166

Citation:

I. Ban et al., "The Synthesis of Silica-Coated Permalloy Nanoparticles Using a Water-in-Oil Microemulsion ", Materials Science Forum, Vol. 494, pp. 161-166, 2005

Online since:

September 2005

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$38.00

[1] H. Gleiter, Progr. Mater. Sci., 33 (1989), p.223.

[2] J. D. Hood, M. Bednarski, R. Frausto, S. Guccione, R. A. Reisfeld, R. Xiang and D.A. Cheresh, Science, 296 (2002), p.2404.

[3] B. M. Berkovsky, F. Medvedov, M. S. M. Krokov, "Magnetic Fluids: Engineering applications, Oxford University Press (1993).

[4] S. W. Charles, J. Popplewell, Properties and Application of Magnetic Liquids in Hand Book of Magnetic Materials. Vol. 2 Ed. K. H. J. Buschow, p.153.

[5] K. Wormuth, J. Colloid Interface Sci., 241 (2001), p.366.

[6] C. C. Wang, D. H. Chen, T. Huang, Colloid & Interfaces, A: Physicochemical and Engineering Aspects 189 (2001), p.145.

[7] I. Ban, M. Drofenik, D. Makovec, The synthesis of iron-nickel alloy nanoparticles using a reverse micelle technique, (submitted to Materials Science and Engineering) (2004).

DOI: https://doi.org/10.1016/j.jmmm.2006.04.010

[8] DIFFRACplus , Seach-match, Version 3. 0, PDF1, PDF2 (1997).

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