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Magnetic Bistability of the “Small Disk on Big Disk” Structure

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Abstract:

On the basis of the micromagnetic simulations we reveal that in the small disk on big disk (d+D) nanostructure it is possible the sustained existence of a single-domain and vortex configurations of magnetization. The presence of the metastable state is possible due to the energy barrier, which is caused by magnetostatic interaction between disks. Switching between states can be performed by the external high frequency excitation. Magnetization switching of the small disk on big disk nanostructure is determined by the interaction of the vortex core in big disk with z-component of the magnetization of small disk.

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Periodical:

Solid State Phenomena (Volume 215)

Pages:

499-502

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.215.499

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Online since:

April 2014

Authors:

Maxim E. Stebliy, Alexey V. Ognev, Alexander S. Samardak, Margarita Anisimova, Vladimir Ryabov, Alexander Kolesnikov, Ludmila Chebotkevich

Keywords:

High-Frequency Dynamics, Hysteresis, Nanodisk, Spin-Valve, Vortex Dynamics

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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