Physical Properties of Magnetite Nanoparticles Covered by 11-Mercaptoundecanoic Acid

• Authors: M. Timko , P. Kopčanský , M. Antalik , M. Simsikova , E. Valusova , M. Molcan , J. Kováč
• Languages of publication: EN

Abstracts

EN

We have investigated the magnetic behavior of magnetite nanoparticles covered by the 11-mercaptoundecanoic acid around magnetite core prepared by a standard co-precipitation method. The particles show superparamagnetic behavior at room temperature, with transition to a blocked state at blocking temperature 91 K estimated from zero field cooled and field cooled at 500 Oe experiment. The hysteresis loop measured at 293 K showed magnetization 32.8 emu/g at 50 kOe without any coercivity. The mean particle size (7.1 nm) was determined by fitting a magnetization curve obtained at 295 K assuming a log-normal size distribution.

Keywords

EN

47.65.Cb; 85.70.-w; 75.30.Cr; 75.47.Lx

Discipline

• 75.30.Cr: Saturation moments and magnetic susceptibilities
• 47.65.Cb: Magnetic fluids and ferrofluids
• 85.70.-w: Magnetic devices(for magnets, see 07.55.Db; for molecular magnets, see 75.50.Xx; for beam bending magnets, see 41.85.Lc; see also 84.71.Ba Superconducting magnets and magnetic levitation devices; 75.50.Ss Magnetic recording materials)
• 75.47.Lx: Magnetic oxides

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1321-1323

Dates

published

2012-05

Contributors

author

M. Timko

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

P. Kopčanský

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

M. Antalik

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

M. Simsikova

• Department of Biochemistry, Faculty of Sciences UPJS, Moyzesova 11, 041 54 Kosice, Slovakia

author

E. Valusova

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

M. Molcan

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

J. Kováč

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

References

• 1. Q.A. Pankhurst, N.K.T. Thanh, S.K. Jones, J. Dobson, J. Phys. Chem. D, Appl. Phys. 22, 224001 (2009)
• 2. J.W. Bulte, Am. J. Roentgenol. 193, 314 (2009)
• 3. Tang, K.H. Muller, M.J. Graves, Z.Y. Li, S.R. Walsh, V. Young, U. Sadat, S.P.S. Howarth, J.H. Gillard, Atherioscler. Thromb. Vasc. Biol. 29, 1001 (2009)
• 4. B. Thiesen, A. Jordan, Int. J. Hyperthermia 24, 467 (2008)
• 5. H. Akiyama, A. Ito, Y. Kawabe, M. Kamihira, Biomed. Microdev. 11, 713 (2008)
• 6. R. Weissleder, D.D. Stark, B.L. Engelstad, B.R. Bacon, C.C. Compton, D.L. White, P. Jacobs, J. Lewis, Am. J. Roentgenol. 152, 167 (1989)
• 7. A. Jordan, P. Wust, R. Scoltz, B. Tesche, H. Fähling, T. Mitrovics, T. Vogl, Int. J. Hyperthermia 15, 705 (1996)
• 8. A.B. Bourlinos, A. Bakandritos, V. Georgakilas, V. Tziltzios, D. Petridis, J. Mater. Chem. 41, 5250 (2006)
• 9. R.W. Chantrell, J. Popplewell, S.W. Charles, IEEE Trans. Magn. MAG-14, 975 (1978)
• 10. P. Dutta, S. Pal, M.S. Seehra, N. Shah, G.P. Huffman, J. Appl. Phys. 105, 07B501 (2009)

Identifiers

DOI

10.12693/APhysPolA.121.1321