Magnetic hysteresis properties and anhysteretic remanent magnetization of spherical Fe3O4 particles in the grain size range 60-160 nm

Physics

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Scientific paper

The grain size dependence of hysteresis parameters (4.2-294 K) and of the anhysteretic remanent magnetization (294 K) was measured on dispersed spherical Fe3O4 particles in the grain size range 60-160 nm. There are in part marked temperature variations of the hysteresis properties. It is assumed that at least at 130 K (K1 = 0) the magnetic structure of particles in a certain grain size range is characterized by a curling mode magnetic moment configuration which may also form in the remanence state.

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