Magnetic Properties of Ferrofluid with Cobalt Ferrite Particles |
| P. Didukha, A. Ślawska-Waniewskaa, J.M. Grenecheb and P.C. Fanninc a Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland b Laboratoire de Physique, UPRESA CNRS 6087, Université du Maine 72085 Le Mans, France c Department of Electronic & Electrical Engineering, Trinity College, Dublin 2, Ireland |
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| Low temperature Mössbauer investigations of a diluted magnetic fluid containing ultrafine CoFe2O4 particles are presented. The thermal evolution of cobalt ferrite particles from the magnetically ordered state to the superparamagnetic state with the blocking temperature at about 80 K, is shown. |
| DOI: 10.12693/APhysPolA.97.587 PACS numbers: 75.50.Mm, 76.80.+y, 61.18.Fs |