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Magnetic Properties of Biocompatible Magnetic Fluid after Electron Irradiation

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Tomašovičová N., Haysak I., Koneracká M., Kováč J., Timko M., Závišová V., Okunev A., Parlag A., Fradkin A., Sakhno V., Kopčanský P.

Acta Physica Polonica A

2012

vol. 121

issue 5-6

1302-1304

The magnetic particles in the water-based magnetic fluids were sterically stabilized by natrium oleate to prevent their agglomeration and consequently the adsorption of poly-ethylene-glycol (PEG) was carried out to improve the biocompatibility of the magnetic particles. Two sets of samples were prepared. The first set of the samples was with different molar weight of PEG (Mw = 400, 1000, 10000 and 20000) at the constant weight ratio of PEG/Fe_3O_4 = 0.25 and the second one was with different weight ratio of PEG/Fe_3O_4 and constant molar weight of PEG (Mw = 1000). The samples were irradiated with 20 Gy. The same reduction of saturated magnetization (about 10%) after electron irradiation with 20 Gy was observed for all prepared samples.

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1 Acta Physica Polonica A

1 2012

1 Fradkin A.

1 Haysak I.

1 Koneracká M.

1 Kopčanský P.

1 Kováč J.

1 Okunev A.

1 Parlag A.

1 Sakhno V.

1 Timko M.

1 Tomašovičová N.

1 Závišová V.

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Magnetic Properties of Biocompatible Magnetic Fluid after Electron Irradiation