The Effect of Polymer Immobilization on Magnetic Properties of Magnetosomes |
| M. Timkoa, A. Džarováa, J. Kovača, P. Kopčanskýa and H. Gojzewskib
aInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia bInstitute of Physics, Poznań University of Technology, Nieszawska 13A, 60-965 Poznań, Poland |
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| The anisotropy of several PVA/magnetosomes magnetically textured films has been investigated from the point of view of magnetic properties. The thin film synthesized under the influence of a magnetic field (99 mT) shows the typical behavior of an anisotropic material. On sample textured in magnetic field the magnetisation loop measurements were performed in dependence on the direction of the external magnetic field with respect to the texture axis. The results of hysteresis measurements show that the magnetic field applied during the synthesis promotes an orientation of the chains of magnetosomes and permanently textured film is obtained after solidification. The obtained values for magnetic remanence and coercivity were dependent on the external magnetic field orientation and the alignment effect of particle moments may be clearly seen which is in agreement with the theoretical model of magnetic particle chains. |
| DOI: 10.12693/APhysPolA.118.995 PACS numbers: 75.30.Cr, 75.30.Gw, 75.50.Mm, 75.50.Tt, 75.60.Ej |