ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We present data, obtained from measured Co/Ni multilayers, that indicate that the magnetic relaxation processes take place through a nucleation-coalescence sequence, and thus crucially implicates the existance of exchange and dipolar interactions. Depending on the layer thickness the relaxation proceeds either through a single global stage or through several partial ones. In both cases the relaxation stages involve a time lapse during which the macroscopic state of the system evolves very slowly, followed by a sharp variation of the total moment of the sample. Such behavior clearly implies a significant departure from the conventionally accepted Arrhenius relaxation kinetics. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.124533
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