Abstract
The basic magnetic parameters (coercivity, remanent magnetization) of the magnetization process in nanocrystalline soft magnetic alloys are analysed. The estimation procedure mainly consists of the energy minimization of an assembly of single domain particles, taking into account the main contributions in these biphasic systems (crystalline and residual amorphous phases). The grain size dependence of coercivity in these nanocrystalline materials is analysed considering the occurrence of long-range exchange interactions exponentially attenuated as a function of the distance between interacting particles.
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