We report the results of magnetization and 57Fe Mo¨ssbauer spectroscopy measurements performed in the temperature range 5-300 K on composites containing iron-oxide nanoparticles encased in polystyrene type resins. After carrying out a suitable field treatment in order to decouple the particles from the matrix, a fraction of the particles freely rotate in response to an applied magnetic field.
Unconventional magnetic behavior of iron oxide nanoparticles in polymeric matrices
S Foglia;D Fiorani;
2001
Abstract
We report the results of magnetization and 57Fe Mo¨ssbauer spectroscopy measurements performed in the temperature range 5-300 K on composites containing iron-oxide nanoparticles encased in polystyrene type resins. After carrying out a suitable field treatment in order to decouple the particles from the matrix, a fraction of the particles freely rotate in response to an applied magnetic field.File in questo prodotto:
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