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Magnetic properties of nanocrystalline materials: A Monte Carlo simulation

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Ovidiu Crisan, Labaye Y, Berger L, Greneche JM

Editorial: PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 189 (3), p.845-848, 2002.

Rezumat:

The magnetic properties of interfacial regions between ferromagnetic nanograins and the residual matrix in nanocrystalline materials, are modelled using Monte Carlo simulation. The exchange coupling between matrix and nanograin influences differently the nanograin surface and the interface between nanograin and matrix. This behaviour has been explained in terms of a polarisation mechanism of the interfacial zones leading to magnetic correlation between spins of nanograin surface and core.

Cuvinte cheie: NANOPARTICLES; ALLOYS