Research Papers in Physics and Astronomy


Date of this Version

July 2001


Published by IEEE; IEEE Trans. IEEE Trans-Mag. 37, 2549 (2001). ©2001 IEEE. Permission to use.


Continuum and layer-resolved calculations are used to investigate the spin structure in the vicinity of grain boundaries. Reduced exchange in the grain-boundary region gives rise to a quasidiscontinuity of the magnetization and yields a perturbation which decays exponentially inside the grains. An effective intergranular exchange is obtained as a micromagnetically well-defined function of the grain-boundary exchange, and it is discussed how grain boundaries affect the hysteresis loops of nanostructures.

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