ACTA

Magnetic Properties of Biocompatible Magnetic Fluid after Electron Irradiation

N. Tomašovičová^a, I. Haysak^b, M. Koneracká^a, J. Kováč^a, M. Timko^a, V. Závišová^a, A. Okunev^b, A. Parlag^b, A. Fradkin^b, V. Sakhno^c and P. Kopčanský^a
^aInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonová 47, 04001 Košice, Slovakia
^bUzhgorod National University, Kapitulna 9A, 880 00 Uzhgorod, Ukraine
^cInstitute for Nuclear Research, Ukrainian National Academy of Science, Prospekt Nauky 47, 03680 Kiev, Ukraine

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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, 10 000 and 20 000) at the constant weight ratio of PEG/Fe₃O₄ = 0.25 and the second one was with different weight ratio of PEG/Fe₃O₄ 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.

DOI: 10.12693/APhysPolA.121.1302
PACS numbers: 75.50.Mm, 61.80.Fe, 61.82.Rx