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Damage spreading in a periodic nanoarray of magnetic posts

✍ Scribed by A Kaczanowski; K Kułakowski

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
199 KB
Volume
351
Category
Article
ISSN
0921-4526

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✦ Synopsis

We investigate the dynamics of magnetism of a nanoscopic array, formed by monodomain magnetic posts, by means of the Pardavi-Horvath algorithm. The damage spreading technique is applied to check the stability of the magnetic structure of the array in the presence of an applied oscillating magnetic field of low frequency. As a space of parameters, we consider the plane ðs; H a Þ; where s is the distribution width of the coercive fields of the array posts and H a is the amplitude of the applied oscillating field. Within this plane an area is found, where local damages of the magnetic structure spread. We check also the possibility of collective flippings (avalanches) of magnetic moments of the post. We found no avalanches at any point of the ðs; H a Þ plane.

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