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Title: Gyrotropic frequency control in ferromagnetic dots using a nanoscale vortex barrier

Abstract

The vortex translational mode frequency is known to be only weakly dependent on the magnitude of an in-plane magnetic field (e.g. the vortex core position) for circular ferromagnetic dots. Here we demonstrated that the frequency-field dependence becomes discrete when a nanoscale vortex barrier is introduced in the dot structure. We found that the frequency is mostly defined by the outer diameter of the dot or the barrier size for the vortex core located outside or inside the barrier, correspondingly. The experimental results are in good agreement with the micromagnetic simulation.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1415624
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 13th Joint Magnetism and Magnetic Materials International Magnetics Conference, 01/11/16 - 01/15/16, San Deigo, CA, US
Country of Publication:
United States
Language:
English

Citation Formats

Ding, Junjia, Jain, Shikha, Lapa, Pavel, Khaire, Trupti, Lendinez, Sergi, Posada, Chrystian, Zhang, Wei, Pearson, John, Hoffmann, Axel, and Novosad, Valentyn. Gyrotropic frequency control in ferromagnetic dots using a nanoscale vortex barrier. United States: N. p., 2016. Web. doi:10.1063/1.4942794.
Ding, Junjia, Jain, Shikha, Lapa, Pavel, Khaire, Trupti, Lendinez, Sergi, Posada, Chrystian, Zhang, Wei, Pearson, John, Hoffmann, Axel, & Novosad, Valentyn. Gyrotropic frequency control in ferromagnetic dots using a nanoscale vortex barrier. United States. https://doi.org/10.1063/1.4942794
Ding, Junjia, Jain, Shikha, Lapa, Pavel, Khaire, Trupti, Lendinez, Sergi, Posada, Chrystian, Zhang, Wei, Pearson, John, Hoffmann, Axel, and Novosad, Valentyn. 2016. "Gyrotropic frequency control in ferromagnetic dots using a nanoscale vortex barrier". United States. https://doi.org/10.1063/1.4942794.
@article{osti_1415624,
title = {Gyrotropic frequency control in ferromagnetic dots using a nanoscale vortex barrier},
author = {Ding, Junjia and Jain, Shikha and Lapa, Pavel and Khaire, Trupti and Lendinez, Sergi and Posada, Chrystian and Zhang, Wei and Pearson, John and Hoffmann, Axel and Novosad, Valentyn},
abstractNote = {The vortex translational mode frequency is known to be only weakly dependent on the magnitude of an in-plane magnetic field (e.g. the vortex core position) for circular ferromagnetic dots. Here we demonstrated that the frequency-field dependence becomes discrete when a nanoscale vortex barrier is introduced in the dot structure. We found that the frequency is mostly defined by the outer diameter of the dot or the barrier size for the vortex core located outside or inside the barrier, correspondingly. The experimental results are in good agreement with the micromagnetic simulation.},
doi = {10.1063/1.4942794},
url = {https://www.osti.gov/biblio/1415624}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 01 00:00:00 EDT 2016},
month = {Sun May 01 00:00:00 EDT 2016}
}

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Works referenced in this record:

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