Stability of standing spin wave in permalloy thin film studied by anisotropic magnetoresistance effect

We have investigated the stability for the resonant spin precession under the strong microwave magnetic field by a specially developed detection method using the anisotropic magnetoresistance effect. The electrically separated excitation and detection circuits enable us to investigate the influence...

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Bibliographic Details
Published in:Journal of applied physics 2015-12, Vol.118 (23)
Main Authors: Yamanoi, K., Yokotani, Y., Cui, X., Yakata, S., Kimura, T.
Format: Article
Language:English
Subjects:
ANISOTROPY
Applied physics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Dependence
EXCITATION
FERROMAGNETIC RESONANCE
Ferromagnetism
Ferrous alloys
High temperature effects
JOULE HEATING
Magnetic alloys
MAGNETIC FIELDS
MAGNETORESISTANCE
Magnetoresistivity
Magnons
MICROWAVE RADIATION
Ohmic dissipation
PERMALLOY
PRECESSION
Resistance heating
SPECTRA
Spin dynamics
SPIN WAVES
Stability
THIN FILMS
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Summary:We have investigated the stability for the resonant spin precession under the strong microwave magnetic field by a specially developed detection method using the anisotropic magnetoresistance effect. The electrically separated excitation and detection circuits enable us to investigate the influence of the heating effect and the nonuniform spin dynamics independently. The large detecting current is found to induce the field shift of the resonant spectra because of the Joule heating. From the microwave power dependence, we found that the linear response regime for the standing spin wave is larger than that for the ferromagnetic resonance. This robust characteristic of the standing spin wave is an important advantage for the high power operation of the spin-wave device.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4937918