Quantum and Structural-Dimensional Properties of Ferromagnetic Nanoparticles: Features of Nickel and Iron Cluster Systems

Abstract

The investigation formalism for magnetic properties of ferromagnetic nanoparticles (clusters) is elaborated. As revealed, the magnetic parameters of nanoparticles discontinue due to variation of their spatial atomic structure. The processes of thermoactivated and quantum relaxations of clusters magnetic moments are considered. As shown, by the variation of a magnitude of external magnetic field applied to the nanoparticles, one can vary magnetic quantum-fluctuation physical characteristics (crossover temperature, quantum-fluctuations rate, and magnetization reversal time) in a wide range.

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