TITLE

Tunable zero field ferromagnetic resonance in arrays of bistable magnetic nanowires

AUTHOR(S)
De La Torre Medina, Joaquín; Piraux, Luc; Encinas, Armando
PUB. DATE
January 2010
SOURCE
Applied Physics Letters;1/25/2010, Vol. 96 Issue 4, p042504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The tunability of the zero field resonance frequency in arrays of bistable nanowires is demonstrated. Analysis of the resonance spectra for different remanent states show that the signal results from the superposition of the double absorption related to wires magnetized in both the positive and negative direction. An analytical model is proposed and validated which depends of the configuration dependent dipolar interaction and the peak amplitude of the superposing signals. The range over which the zero field resonance frequency can be tuned has a lower bound at remanence equal to one and a maxima when remanence vanishes.
ACCESSION #
47807443

 

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